UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                               ___________________

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


          Date of Report (Date of earliest event reported): May 9, 2006


                             ESCO TECHNOLOGIES INC.
               (Exact Name of Registrant as Specified in Charter)


          Missouri                     1-10596                 43-1554045
      (State or Other                (Commission            (I.R.S. Employer
Jurisdiction of Incorporation)       File Number)          Identification No.)



     9900A Clayton Road, St. Louis, Missouri                       63124-1186
    (Address of Principal Executive Offices)                       (Zip Code)



        Registrant's telephone number, including area code: 314-213-7200


Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR
    230.425)

[ ] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
    240.14a-12)

[ ]  Pre-commencement  communications  pursuant  to Rule  14d-2  (b)  under  the
     Exchange Act (17 CFR 240.14d-2 (b))

[ ]  Pre-commencement  communications  pursuant  to Rule  13e-4  (c)  under  the
     Exchange Act (17 CFR 240.13e-4 (c))



ITEM 2.02.  RESULTS OF OPERATIONS AND FINANCIAL CONDITION

Today,  May 9, 2006, the Registrant is issuing a press release  (Exhibit 99.1 to
this report)  announcing its fiscal 2006 second quarter  financial and operating
results. See Item 7.01, Regulation FD Disclosure below.


ITEM 7.01.  REGULATION FD DISCLOSURE

Today,  the  Registrant  is issuing a press release  announcing  its fiscal 2006
second  quarter  financial  and  operating  results,  and will conduct a related
Webcast  conference  call at 4:00 p.m.  central  time.  This  press  release  is
furnished  herewith  as  Exhibit  99.1 and will be  posted  on the  Registrant's
website located at http://www.escotechnologies.com. It can be viewed through the
                   -------------------------------
"Investor  Relations"  page  of the  website  under  the tab  "Press  Releases,"
although the Registrant  reserves the right to discontinue that  availability at
any time.


NON-GAAP FINANCIAL MEASURES

The press release furnished herewith as Exhibit 99.1 contains financial measures
and  financial  terms not  calculated  in  accordance  with  generally  accepted
accounting  principles  in the  United  States of America  ("GAAP")  in order to
provide  investors and management  with an alternative  method for assessing the
Registrant's operating results in a manner that is focused on the performance of
the Registrant's  ongoing  operations.  The Registrant has provided  definitions
below  for the  non-GAAP  financial  measures  utilized  in the  press  release,
together with an  explanation  of why management  uses these  measures,  and why
management  believes  that  these  non-GAAP  financial  measures  are  useful to
investors.  The press release uses the non-GAAP financial measures of "EBIT" and
"EBIT margin".

The  Registrant  defines  "EBIT" as  earnings  before  interest  and taxes.  The
Registrant  defines  "EBIT  margin"  as  EBIT as a  percent  of net  sales.  The
Registrant's  management  evaluates the  performance  of its operating  segments
based on EBIT and EBIT margin, and believes that EBIT and EBIT margin are useful
to investors to demonstrate the operational  profitability  of the  Registrant's
business segments by excluding interest and taxes, which are generally accounted
for across the entire  Registrant on a consolidated  basis.  EBIT is also one of
the measures used by management in determining  resource  allocations within the
Registrant and incentive compensation.

The  presentation of the  information  described above is intended to supplement
investors'   understanding  of  the  Registrant's  operating  performance.   The
Registrant's  non-GAAP  financial  measures  may  not  be  comparable  to  other
companies' non-GAAP financial performance measures.  Furthermore, these measures
are not  intended  to replace net  earnings,  cash  flows,  financial  position,
comprehensive  income  (loss),  or any other measure as determined in accordance
with GAAP.


ITEM 9.01.  FINANCIAL STATEMENTS AND EXHIBITS

(c)  Exhibits

Exhibit No.       Description of Exhibit

    99.1          Press Release dated May 9, 2006


OTHER MATTERS

The information  contained in this report,  including Exhibit 99.1, shall not be
deemed to be "filed" for purposes of Section 18 of the  Securities  Exchange Act
of 1934 as amended  ("Exchange Act") or otherwise  subject to the liabilities of
that section,  unless the Registrant  incorporates it by reference into a filing
under the Securities Act of 1933 as amended or the Exchange Act.



                                    SIGNATURE

     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                           ESCO TECHNOLOGIES INC.


Dated:  May 9, 2006                        By:  /s/ G.E. Muenster
                                                -----------------
                                           G.E. Muenster
                                           Senior Vice President and
                                           Chief Financial Officer


                                  EXHIBIT INDEX
                                  -------------

Exhibit No.       Description of Exhibit

   99.1           Press Release dated May 9, 2006



Exhibit 99.1
Press Release



NEWS FROM                                                    ESCO TECHNOLOGIES

For more information contact:                              For media inquiries:
Patricia K. Moore                                          David P. Garino
Director, Investor Relations                               (314) 982-0551
ESCO Technologies Inc.
(314) 213-7277

                      ESCO ANNOUNCES SECOND QUARTER RESULTS
                      -------------------------------------

     St.  Louis,  MO, May 9, 2006 - ESCO  Technologies  Inc.  (NYSE:  ESE) today
announced  its results for the fiscal 2006 second  quarter ended March 31, 2006.
Within this  release,  references to  "quarters"  relate to the fiscal  quarters
ended March 31 for the respective fiscal years noted.

     The results of  operations  for the second  quarter of fiscal 2006 included
three items which were not  reflected in the first half earnings per share (EPS)
guidance of $0.35 to $0.40  provided in the February 2, 2006  earnings  release.
The three items not reflected in the previous guidance were:

1.   The Company  completed its purchase  accounting  valuation of  identifiable
     intangible assets subject to amortization related to Nexus Energy Software,
     Inc. (Nexus) (acquired 11/29/05) and Hexagram,  Inc. (acquired 2/1/06). The
     non-cash  after-tax  amortization  charge  recognized in the second quarter
     related to these acquisitions was ($0.5) million, or ($0.02) per share. The
     pretax amount was ($0.8) million and is reflected in the Corporate  segment
     results.

2.   The Company,  via a special  intercompany cash dividend,  repatriated $28.7
     million of its cash held by  foreign  subsidiaries  into the United  States
     under the tax  provisions of the "American  Jobs Creation Act of 2004." The
     non-cash tax provision  charge  recognized in the second quarter was ($1.7)
     million,  or ($0.06) per share. This equates to a 5.9 percent effective tax
     rate on the cash balance repatriated.

3.   In March 2006, the U.S.  Government's  Defense Contract Audit Agency issued
     an audit report related to a defense contract from the mid-1980's involving
     a previously divested subsidiary for which the Company had retained certain
     indemnity obligations.  The audit report supported the Company's conclusion
     that the liability is no longer  required in connection  with this contract
     indemnification.
                                    - more -


Add One

     As a result,  the Company reversed its estimated  liability related to this
obligation  and recognized a non-cash  after-tax gain of $1.0 million,  or $0.04
per share. The pretax gain was $1.8 million.

     The aggregate  effect on net earnings in the 2006 second quarter related to
the above items was ($1.1) million,  or ($0.04) per share and is included in the
results noted below.

     Net earnings for the 2006 second  quarter were $7.3  million,  or $0.28 per
share  compared  to net  earnings  of $10.4  million,  or $0.40 per share in the
second  quarter of 2005.  The primary  drivers of the lower earnings in the 2006
second quarter include:

o    The  consolidated  effective  income  tax  rate was  53.5  percent  in 2006
     compared  to  36.6  percent  in  2005  primarily  due to the  $1.7  million
     repatriation charge noted above and lower foreign-sourced income.

o    A $1.9 million increase in SG&A expenses (excluding $3.7 million from Nexus
     and Hexagram) relating to additional  engineering,  marketing,  new product
     development, and stock option expensing ($0.6 million, or $0.02 per share).

o    Significantly lower sales of Comtrak's SecurVision video security products
     in the current quarter compared to the prior year quarter.

o    Lower sales of high margin defense  spares and T-700  shipments at VACCO in
     the current period versus prior year.

o    The current period amortization of identifiable intangible assets described
     above.

o    The above items were partially  offset by improved  operating  results from
     the additional  sales of RF Test  equipment,  Automatic Meter Reading (AMR)
     devices, and commercial aerospace products.

o    In addition,  the gain on the  settlement  of the legacy  defense  contract
     described above contributed favorably to the 2006 second quarter results.

     Net earnings for the first six months of fiscal 2006 were $9.5 million,  or
$0.36 per share, compared to $20.9 million, or $0.80 per share for the first six
months of fiscal 2005.  The decrease in net  earnings  primarily  related to the
decrease  in the 2006 first  quarter  results  of  operations  described  in the
February 2, 2006 earnings release.



Sales
- -----

     Second  quarter 2006 sales were $122.9  million,  or 16 percent higher than
second  quarter 2005 sales of $106.2  million.  Acquisitions  accounted for $6.5
million  of the  $16.7  million  sales  increase  in the  2006  second  quarter.
Unfavorable  foreign  currency  values in the 2006 second quarter  resulted in a
$0.8 million negative sales comparison.

                                    - more -

Add Two

     Fiscal 2006 year-to-date  sales were $213.5 million,  or 1.4 percent higher
than the  first  six  months  of  fiscal  2005,  primarily  due to the Nexus and
Hexagram  acquisitions  which  accounted  for $7.7  million of sales since their
respective  acquisition dates.  Unfavorable foreign currency values year-to-date
in 2006 resulted in a $1.8 million negative sales comparison.

     Communications  sales of $43.2  million  increased  $7.1  million,  or 19.7
percent in the 2006 second  quarter  compared to the second quarter of 2005 as a
result of the following items:  $12.7 million of sales to TXU Electric  Delivery
(TXU);  $6.5 million of sales from Nexus and Hexagram;  sales to COOP  customers
decreased  $6.3  million in the second  quarter  due to the  weakness  in orders
entered during the latter half of fiscal 2005; sales to the Puerto Rico Electric
Power  Authority  (PREPA) were $2.5 million lower in the current period compared
to the prior year; and lower shipments of Comtrak's  SecurVision  video security
products,  which  generated  $0.4 million in sales during the second  quarter of
2006 versus $3.5  million of sales in the 2005 second  quarter.  During the 2006
second quarter, DCSI's sales to COOP and public power (Municipal) customers were
$20.5  million  compared  to  $26.8  million  in the  second  quarter  of  2005.
Year-to-date  Communications  sales,  excluding  acquisitions,  decreased  $14.9
million in 2006 primarily due to the $7.7 million decrease in SecurVision  sales
and $7.2 million lower sales of DCSI's AMR products.

     Filtration  segment sales of $45.0 million  increased $4.0 million,  or 9.8
percent  during the second quarter of 2006 compared to the prior year due to the
following  items:  $1.6 million of additional  sales at PTI due to the continued
strengthening of the commercial  aerospace  market;  $0.3 million lower sales at
VACCO  resulting from lower  deliveries of defense  spares;  and $2.7 million of
additional  sales at  Filtertek  including  automotive,  medical and  commercial
products.  Year-to-date  Filtration sales increased $1.5 million, or 1.8 percent
in 2006 to $86.5 million.

     Test segment sales of $34.6 million increased $5.5 million, or 18.9 percent
during the second quarter of 2006 due to  significantly  higher  component sales
and additional test chamber deliveries  throughout the world.  Year-to-date Test
sales  increased  $8.7  million,  or 15.6  percent,  to $64.6  million  in 2006.

Earnings Before Interest and Taxes (EBIT)
- -----------------------------------------

     On a segment basis,  items that impacted EBIT dollars and EBIT as a percent
of sales ("EBIT  margin")  during the second quarter of fiscal 2006 included the
following.

     In the  Communications  segment,  EBIT for the 2006 second quarter was $9.7
million  (22.5  percent of sales),  compared to $10.6  million  (29.4 percent of
sales) in the prior year second quarter. The primary causes of this $0.9 million
decrease include:  the $3.1 million sales decrease of SecurVision products noted
above which caused a $1.4 million EBIT decrease; Nexus and

                                    - more -

Add Three

Hexagram's  combined  EBIT  loss of $0.3  million;  partially  offset by an $0.8
million  increase in EBIT from DCSI  resulting from  increased  sales.  The 2006
year-to-date  Communications  segment EBIT  decreased  $11.5 million versus 2005
primarily due to the sales decreases in AMR and SecurVision  products  described
above.

     In the  Filtration  segment,  the 2006 second quarter EBIT was $4.7 million
(10.4  percent of sales),  compared to $5.0 million  (12.2  percent of sales) in
prior year second quarter.  This $0.3 million decrease in the second quarter was
the result of: a $0.8  million  reduction  in EBIT at VACCO  resulting  from the
decreased sales of defense spares;  partially offset by $0.5 million increase at
PTI related to additional sales volume resulting from continued  strength in the
commercial aerospace market. Additionally, the 2005 second quarter and six month
EBIT  amounts  included  a $0.3  million  and $0.9  million  cost  reimbursement
realized  at  Filtertek  related  to a supply  agreement  with a medical  device
customer  which was  terminated  in fiscal 2005.  Year-to-date  Filtration  EBIT
decreased  $3.3  million  primarily  due to: a $2.4  million  decrease  at VACCO
related to lower  defense  spares  sales;  a $1.4  million  decrease  in EBIT at
Filtertek  resulting  from the absence of the $0.9  million  cost  reimbursement
described  above and weakness in the  automotive  market coupled with higher raw
material prices; partially offset by a $0.6 million increase at PTI.

     In the Test segment, EBIT of $4.3 million (12.4 percent of sales) increased
in the second  quarter of 2006 from $3.3 million  (11.3 percent of sales) due to
additional  sales volume and  favorable  changes in sales mix. The  year-to-date
EBIT  contribution  increased  $1.9  million over prior year and the EBIT margin
improved to 11.3 percent of sales from 9.7 percent due to favorable  leverage on
the  additional  sales  volume  and a  larger  concentration  of  higher  margin
component sales. In addition,  EBIT was negatively impacted in the first half of
2005 as a result of higher  installation  costs  incurred on certain  government
shielding projects in foreign locations.

     The Corporate  office  operating  expenses were $0.2 million  higher in the
second quarter of 2006 compared to 2005 and included: a $1.8 million pretax gain
on the  reversal  of the  liability  related  to an  indemnity  owed to a former
defense  subsidiary;  the $0.8 million of pretax  amortization  of  identifiable
intangible assets; and $0.6 million of pretax expenses related to stock options.

Effective Tax Rate
- ------------------

     For the 2006 second  quarter,  the  Company's  effective  tax rate was 53.5
percent  versus 36.6 percent for the second  quarter of 2005. The increased rate
was primarily  driven by the $1.7 million non-cash charge related to the foreign
cash repatriation noted above which increased the

                                    - more -


Add Four

effective tax rate by 10.9  percentage  points.  In addition,  the effective tax
rate was higher than previous expectations due to lower  foreign-sourced  pretax
income, primarily in Puerto Rico related to the lower sales to PREPA.

New Orders
- ----------

     New orders  received  were $128.7  million  (including  $4.0 million of new
orders and $6.0 million of acquired  backlog  from  Hexagram and $6.3 million of
new orders  from  Nexus) and $113.8  million in the second  quarters of 2006 and
2005, respectively, resulting in a backlog of $274.5 million at March 31, 2006.

     New orders  received  and  acquired  backlog in the second  quarter of 2006
compared to the second quarter of 2005, respectively, were: in Filtration, $43.2
million and $60.5  million  (which  included  multi-year  buys for the T-700 and
Virginia Class submarine);  in Communications,  $55.5 million and $27.4 million;
and in Test $29.9 million and $25.9 million.

     New orders received by DCSI in the second quarter totaled $38.8 million and
included  $17.7  million  in COOP and  Municipal  orders,  and $21.1  million in
investor-owned utility (IOU) orders. The IOU orders include a follow-on order of
$8.7 million from TXU for an additional  100,000 unit expansion and $5.8 million
from  Florida  Power  &  Light  (FPL)  for  approximately  60,000  load  control
transponders.

     During 2006,  year-to-date orders were $84.4 million in Filtration,  $114.6
million in  Communications,  and $55.8  million in Test for a six month total of
$254.8 million compared to year-to-date 2005 orders of $215.4 million.

Cash
- ----

     At March  31,  2006,  the  Company  had $20.9  million  in cash and no debt
outstanding  compared to $70.4  million  cash and no debt at December  31, 2005.
During the second quarter of 2006, the Company  generated  $12.6 million of cash
and  spent  $62.1  million  of cash  related  to the  acquisition  of  Hexagram.

Chairman's Commentary
- ---------------------

     Vic   Richey,   Chairman   and   Chief   Executive   Officer,    commented,
"Operationally,   the  second   quarter   results  were   consistent   with  our
expectations.  Each of the segments  increased its contributions  over the first
quarter. The improvement in Filtration was modest, the Test business improvement
was more  significant,  and in  Communications we realized the strong rebound we
anticipated  which  resulted  from the strength of our first  quarter  orders at
DCSI.

     "While we had a solid second quarter from a financial  standpoint,  clearly
our  most  significant  accomplishment  was the  acquisition  of  Hexagram.  The
addition of Hexagram not

                                    - more -

Add Five

only more than doubles our served  market in AMR, but it also allows us to offer
a broader portfolio of products and technologies to satisfy the AMR needs of any
utility.

     "With respect to our full year  outlook,  our GAAP guidance is lower due to
the various items  described in the Outlook  section below.  We still expect the
second half to be much stronger than the first.

     "Beyond delivering the second half results,  we are squarely focused on our
performance on the PG&E program,  successful demonstrations where we have active
pilots,  continued progress on our next generation software development at DCSI,
and  capitalizing  on the  opportunities  created by the  additions of Nexus and
Hexagram.  Collectively,  these  initiatives are the keys to capitalizing on the
significant  opportunities  that are available in what continues to be a rapidly
developing AMR/AMI market."

Business Outlook
- ----------------

     Statements contained in the preceding and following paragraphs are based on
current expectations. Statements that are not strictly historical are considered
forward-looking, and actual results may differ materially.

     The Business  Outlook  described  below  includes  the  expected  operating
results  of  Nexus  and  Hexagram  since  their  respective  acquisition  dates,
including the  amortization  of  identifiable  intangible  assets.  The Business
Outlook  for 2006 does not  include  the tax impact of any  future  repatriation
activities  related to the approximately $10 million of foreign cash outstanding
at March 31, 2006.

Purchase Accounting - Identifiable Intangible Assets
- ----------------------------------------------------

     During  the  2006  second  quarter,   Management   completed  its  purchase
accounting valuation related to the identifiable intangible assets for Nexus and
Hexagram. These assets generally include: patents and proprietary know-how; firm
order  long-term   contracts  in  backlog;   license  and  royalty   agreements;
non-compete and employment  agreements for key managers;  and specific  customer
lists.  These  identifiable  assets are  required  to be recorded on the opening
balance sheet and amortized / expensed over their useful lives.

     The total amount of identifiable  intangible assets subject to amortization
related to Nexus and Hexagram was $9.3 million.  The  estimated  lives for these
assets ranged from six months for certain  contracts in backlog,  to seven years
for certain  patents and  proprietary  know-how.  The total goodwill  related to
Nexus and Hexagram was approximately $73 million.

     The pretax  amortization  charge related to these  identifiable  intangible
assets  recorded  in the 2006  second  quarter  was $0.8  million and the pretax
charges  expected  in the third and fourth  quarters  are $1.1  million and $0.8
million, respectively for a total fiscal 2006 pretax charge of

                                    - more -


Add Six

$2.7  million.  The total  pretax  amortization  expense for fiscal year 2007 is
expected  to be $2.1  million,  decreasing  to  approximately  $1.0  million  in
subsequent years. The amortization  charge for the second quarter is recorded in
the Corporate operating segment in the attached exhibits.

Earnings Per Share - 2006
- -------------------------

     Management  now estimates 2006 EPS to be in the range of $1.05 to $1.15 per
share,  including the operating results of Nexus and Hexagram,  the $1.8 million
pretax gain from the reversal of a liability related to a defense contract,  the
$2.7 million of pretax  amortization of intangible  assets, the $1.7 million tax
repatriation  charge,  and the change in the expected effective tax rate for the
full year described  below. The February 2, 2006 EPS guidance range for 2006 was
$1.20 to $1.30 per share.

     For the second half of fiscal year 2006,  EPS is now expected to be between
$0.77 and $0.87 per share.

     As noted above,  in fiscal 2006 the Company began  expensing stock options.
This  expense,  included in the EPS  numbers,  is expected to be in the range of
$0.08 to $0.11 per share annually, or $0.02 to $0.03 per quarter.

     The effective tax rate for the third and fourth  quarters of fiscal 2006 is
expected to be approximately 38 percent,  and for the full year, the annual rate
is  expected  to be  approximately  42  percent.  The annual rate is higher than
previously  expected (39  percent)  due to higher state taxes and lower  foreign
sourced income, primarily in Puerto Rico.

Revenues and EBIT Margins
- -------------------------

     Management expects 2006 consolidated revenues to be in the range of $450 to
$460 million and  consolidated  EBIT margins  should be in the range of 10 to 12
percent  reflecting the impact of the  amortization of  identifiable  intangible
assets.

     On a segment and operating unit basis for 2006,  Management now expects the
     following:

o    PTI sales are  expected to be between $43 and $45 million and EBIT  margins
     should be in the range of 12 to 13 percent.

o    VACCO sales are expected to be between $31 and $32 million and EBIT margins
     should be in the range of 20 to 21 percent as a result of the significantly
     lower  deliveries  of  defense  spares  and a  production  break  in  T-700
     shipments.

o    Filtertek  sales are  expected to be in the range of $93 to $95 million and
     EBIT margins should be in the range of 7 to 8 percent.

o    Test segment sales are expected to be in the range of $126 and $129 million
     and EBIT margins should be in the range of 10.5 to 11.5 percent as a result
     of the

                                    - more -


Add Seven

o    continued  strength of the  wireless  and  electronics  markets,  and solid
     growth in Asia.

o    Communications segment sales, including Nexus and Hexagram, are expected to
     be between $156 and $159 million and EBIT margins should be in the range of
     18 to 20 percent. Nexus sales since the date of acquisition (10 months) are
     expected  to be in the range of $10 to $12  million  and EBIT  should be at
     approximately break-even. Nexus' previous guidance included $0.9 million of
     non-cash   amortization  expenses  related  to  the  acquired  identifiable
     intangible assets.  Hexagram sales since the date of acquisition (8 months)
     are expected to be in the range of $17 to $19 million and EBIT should be at
     approximately  break-even based on the significant investment in SG&A being
     expended to support  sales and marketing as well as the expected ramp up of
     the PG&E contract.  Sales of AMR products at DCSI are expected to be in the
     range of $121 to $122  million and do not include any  revenues  associated
     with the PG&E  contract as software  acceptance  is not expected  until the
     latter part of fiscal  2007.  DCSI's EBIT margin is expected to be 24 to 25
     percent including  approximately  $2.1 million of costs as a result of DCSI
     beginning to amortize the capitalized software development costs related to
     the TNG software.  TNG has been in development  with a third party software
     contractor  for the past two years.  TNG is being  designed and deployed to
     efficiently handle the additional levels of communications  dictated by the
     size of the  service  territories  and the  frequency  of  reads  that  are
     required  under  time-of-use or critical peak pricing  scenarios  needed to
     meet the requirements of large IOUs. The Company has incurred approximately
     $31 million in external TNG development costs through March 31, 2006, which
     are included on the balance sheet in other assets, and is expected to incur
     another  $10 to $15  million in costs  over the next two years.  Additional
     non-TNG related  engineering  and  development  costs are being incurred to
     ramp up the PG&E  contract as well as support other IOU pilots which are in
     process.

o    Corporate operating costs for 2006 are expected to be in the range of $14.5
     to $15.5  million and include the following  items:  $2.7 million of pretax
     amortization  of  identifiable  intangible  assets  related  to  Nexus  and
     Hexagram;  the pretax  costs  related  to the  initiation  of stock  option
     expensing  which began in fiscal  2006 and is expected to be  approximately
     $2.2 to $2.4 million; partially offset by the $1.8

                                    - more -


Add Eight

     million pretax gain associated  with the reversal of a liability  connected
     with the legacy defense contract noted above.

Conference Call
- ---------------

     The Company will host a conference call today, May 9, at 4:00 p.m., Central
Time, to discuss the Company's second quarter  operating  results.  A live audio
webcast will be available on the Company's Web site at www.escotechnologies.com.
Please  access the Web site at least 15 minutes  prior to the call to  register,
download and install any necessary audio software.

     A replay of the  conference  call will be  available  for seven days on the
Company's  website  noted above or by phone (dial  1-888-203-1112  and enter the
pass code 4874006).

Forward-Looking Statements
- --------------------------

     Statements in this press release  regarding fiscal 2006 revenues,  results,
earnings,  sales,  EBIT,  EBIT  margins,  EPS,  sales  and  EBIT  margins  on  a
consolidated  basis and on a segment and operating  unit basis and the timing of
these  contributions,  pretax  amortization  expenses in fiscal  2006,  2007 and
beyond,  achievement of strategic objectives, the success of product development
efforts,  fiscal 2006 corporate  operating  expenses,  fiscal 2006 effective tax
rate, long term success of the Company, stock option expensing,  amortization of
capitalized software development costs in fiscal 2006, successful development of
the TNG  software,  and the timing and amount of costs to be  incurred  over the
next two years in  connection  with the TNG  software,  performance  on the PG&E
contract,  the  timing  of the  software  acceptance  by PG&E,  the  success  of
demonstrations  at active  pilots,  the Company's  ability to capture future AMR
opportunities, the Company's ability to increase shareholder value and any other
written   or  oral   statements   which   are  not   strictly   historical   are
"forward-looking" statements within the meaning of the safe harbor provisions of
the federal  securities  laws.  Investors are cautioned that such statements are
only predictions and speak only as of the date of this release,  and the Company
undertakes  no duty to update.  The Company's  actual  results in the future may
differ materially from those projected in the forward-looking  statements due to
risks and  uncertainties  that exist in the  Company's  operations  and business
environment  including,  but not limited to:  actions by the  California  Public
Utility  Commission,  PG&E's Board of Directors or PG&E's  Management  impacting
PG&E's AMI projects; the success of the Company's competitors; changes in or the
effect of the Federal  Energy  Bill;  the timing and success of DCSI's  software
development efforts; the timing and content of purchase order releases under the
PG&E  contracts;  DCSI's  and  Hexagram's  successful  performance  of the  PG&E
contracts;  weakening  of  economic  conditions  in served  markets;  changes in
customer demands or customer insolvencies; competition;

                                    - more -


Add Nine

intellectual  property  rights;   technical  difficulties;   unforeseen  charges
impacting  corporate  operating  expenses;  the  performance  of  the  Company's
international  operations;  successful  execution  of the  planned  sale  of the
Company's  Puerto Rico  facility;  material  changes in the costs of certain raw
materials including steel, copper and petroleum-based resins; delivery delays or
defaults by customers; termination for convenience of customer contracts; timing
and  magnitude  of  future  contract  awards;  containment  of  engineering  and
development  costs;  performance  issues  with  key  customers,   suppliers  and
subcontractors;  labor disputes;  changes in laws and regulations  including but
not  limited to changes  in  accounting  standards  and  taxation  requirements;
changes in foreign or U.S.  business  conditions  affecting the  distribution of
foreign   earnings;   costs  relating  to  environmental   matters;   litigation
uncertainty;  successful  integration  of  newly  acquired  businesses;  and the
Company's successful execution of internal operating plans.

     ESCO,  headquartered  in St.  Louis,  is a leading  supplier of  engineered
filtration  products  to the  process,  health care and  transportation  markets
worldwide.  In  addition,  the  Company  markets  proprietary,  special  purpose
communications  systems and is the industry  leader in RF shielding and EMC test
products.  Further information  regarding ESCO and its subsidiaries is available
on the Company's website at www.escotechnologies.com.
                                ---------------------

                               - tables attached -

Add Ten ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Condensed Consolidated Statements of Operations (Unaudited) (Dollars in thousands, except per share amounts) Three Months Ended March 31, 2006 -------------- Net Sales $ 122,884 Cost and Expenses: Cost of sales 80,514 Amortization of intangible assets 1,536 SG&A 26,703 Interest (income) expense (100) Other (income) expenses, net (1,548) ------ Total costs and expenses 107,105 ------- Earnings before income taxes 15,779 Income taxes 8,436 ----- Net earnings $ 7,343 ========= Earnings per share: Basic Net earnings $ 0.29 ========= Diluted Net earnings $ 0.28 ========= Average common shares O/S: Basic 25,659 ====== Diluted 26,448 ====== The following reflects the impact of certain items not reflected in the first half EPS guidance: Earnings before Net Diluted income taxes earnings EPS ------------ -------- --- Gain related to defense indemnification obligation(1) $1,801 $1,030 $0.04 Amort. of acquired intangibles (2) ($ 789) ($ 451) ($0.02) Cash Repatriation (3) - ($1,726) ($0.06) ------ ------- ------ Total $1,012 ($1,147) ($0.04) ====== ======= ====== (1) Included in other (income) expenses, net. (2) Included in amortization of intangible assets and represents amortization of acquired intangible assets related to the Hexagram and Nexus acquisitions. Amortization of intangible assets also includes items such as software, patents and licenses. (3) Included in income taxes. - more -

Add Eleven ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Condensed Consolidated Statements of Operations (Unaudited) (Dollars in thousands, except per share amounts) Three Months Ended March 31, 2005 -------------- Net Sales $ 106,160 Cost and Expenses: Cost of sales 68,909 Amortization of intangible assets 525 SG&A 21,073 Interest (income) expense (303) Other (income) expenses, net (485) ---- Total costs and expenses 89,719 ------ Earnings before income taxes 16,441 Income taxes 6,014 ----- Net earnings 10,427 ====== Earnings (loss) per share: Basic Net earnings $ 0.41 ========== Diluted Net earnings $ 0.40 ========== Average common shares O/S: Basic 25,266 ====== Diluted 26,034 ====== - more -

Add Twelve ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Condensed Consolidated Statements of Operations (Unaudited) (Dollars in thousands, except per share amounts) Six Months Ended March 31, 2006 -------------- Net Sales $ 213,470 Cost and Expenses: Cost of sales 144,501 Amortization of intangible assets 2,049 SG&A 50,189 Interest income (817) Other (income) expenses, net (1,926) ------ Total costs and expenses 193,996 ------- Earnings before income taxes 19,474 Income taxes 9,926 ----- Net earnings $ 9,548 ========= Earnings per share: Basic Net earnings $ 0.37 ========= Diluted Net earnings $ 0.36 ========= Average common shares O/S: Basic 25,620 ====== Diluted 26,402 ====== See impact of certain items in preceding 2006 second quarter table, which are also included in the results above. - more -

Add Thirteen ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Condensed Consolidated Statements of Operations (Unaudited) (Dollars in thousands, except per share amounts) Six Months Ended March 31, 2005 -------------- Net Sales $ 210,535 Cost and Expenses: Cost of sales 137,338 Amortization of intangible assets 1,024 SG&A 40,697 Interest expense (783) Other expenses, net (1,169) ------ Total costs and expenses 177,107 ------- Earnings before income taxes 33,428 Income taxes 12,479 ------ Net earnings $ 20,949 ========= Earnings (loss) per share: Basic Net earnings $ 0.82 ========= Diluted Net earnings $ 0.80 ========= Average common shares O/S: Basic 25,444 ====== Diluted 26,236 ====== - more -

Add Fourteen ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Condensed Business Segment Information (Unaudited) (Dollars in millions) Three Months Ended Six Months Ended March 31, March 31, --------- --------- 2006 2005 2006 2005 ---- ---- ---- ---- Net Sales-GAAP PTI $ 11.7 10.1 22.4 20.4 VACCO 8.3 8.6 16.4 19.2 Filtertek 25.0 22.3 47.7 45.4 ---- ---- ---- ---- Filtration subtotal 45.0 41.0 86.5 85.0 Communications 43.2 36.1 62.4 69.6 Test 34.6 29.1 64.6 55.9 ---- ---- ---- ---- Totals $122.8 106.2 213.5 210.5 ====== ===== ===== ===== EBIT-GAAP basis PTI $ 1.6 1.1 2.8 2.2 VACCO 1.4 2.2 3.3 5.8 Filtertek 1.7 1.7 2.7 4.1 --- --- --- --- Filtration subtotal 4.7 5.0 8.8 12.1 Communications 9.7 10.6 8.8 20.3 Test 4.3 3.3 7.3 5.4 Corporate (3.0)(1) (2.8) (6.2)(2) (5.2) ---- ---- ---- ---- Totals $ 15.7 16.1 18.7 32.6 ====== ==== ==== ==== Note: Depreciation and amortization expense was $4.2 million and $3.0 million for the quarters ended March 31, 2006 and 2005, respectively, and $7.2 million and $6.1 million for the six- month periods ended March 31, 2006 and 2005, respectively. (1) Includes a $1.8 million gain related to an indemnification obligation with respect to a previously divested subsidiary and $0.8 million of amortization of acquired intangible assets for Hexagram and Nexus. (2) Includes a $1.8 million gain related to an indemnification obligation with respect to previously divested subsidiary and $0.9 million of amortization of acquired intangible assets for Hexagram and Nexus. - more -

Add Fifteen ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions) EBIT (1) - As Reported Three Months Ended Six Months Ended March 31, March 31, --------- --------- 2006 2005 2006 2005 ---- ---- ---- ---- EBIT $15.7 16.1 18.7 32.6 Interest income 0.1 0.3 0.8 0.8 --- --- --- --- Earnings before income taxes $15.8 16.4 19.5 33.4 ===== ==== ==== ==== (1) EBIT is defined as earnings before interest and taxes. EBIT Margin Outlook - FY 2006 - ----------------------------- Consolidated EBIT margin in the range of 10 percent to 12 percent, PTI EBIT margin in the range of 12 percent to 13 percent, VACCO EBIT margin in the range of 20 percent to 21 percent, Filtertek EBIT margin in the range of 7 percent to 8 percent, Test segment EBIT margin in the range of 10.5 percent to 11.5 percent, and Communications segment EBIT margin in the range of 18 percent to 20 percent, DCSI's EBIT margin in the range of 24 percent to 25 Percent and Nexus and Hexagram EBIT at approximately break-even, under "Business Outlook" cannot be reconciled with a GAAP measure as they represent forward-looking measures with no comparable GAAP measurements quantifiable at this time. - more -

Add Sixteen ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Condensed Consolidated Balance Sheets (Unaudited) (Dollars in thousands) March 31, September 30, 2006 2005 ---- ---- Assets Cash and cash equivalents $ 20,943 104,484 Accounts receivable, net 81,535 68,819 Costs and estimated earnings on long-term contracts 1,877 4,392 Inventories 52,878 48,645 Current portion of deferred tax assets 30,057 30,219 Other current assets 10,840 8,394 ------ ----- Total current assets 198,130 264,953 Property, plant and equipment, net 69,047 67,190 Goodwill 141,845 68,880 Deferred tax assets - - Other assets 59,669 27,697 ------ ------ $468,691 428,720 ======== ======= Liabilities and Shareholders' Equity Accounts payable $ 43,461 29,299 Other current liabilities 40,822 33,458 ------ ------ Total current liabilities 84,283 62,757 Deferred income 4,924 3,134 Other liabilities 33,775 31,805 Long-term debt - - Shareholders' equity 345,709 331,024 ------- ------- $468,691 428,720 ======== ======= - more -

Add Seventeen ESCO TECHNOLOGIES INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Dollars in thousands) Six Months Ended March 31, 2006 -------------- Cash flows from operating activities: Net earnings $ 9,548 Adjustments to reconcile net earnings to net cash provided by operating activities: Depreciation and amortization 7,219 Stock compensation expense 2,643 Changes in operating working capital 7,624 Effect of deferred taxes (1,563) Other 718 --- Net cash provided by operating activities 26,189 Cash flows from investing activities: Acquisition of businesses, less cash acquired (90,862) Capital expenditures (4,296) Additions to capitalized software (18,095) ------- Net cash used by investing activities (113,253) -------- Cash flows from financing activities: Proceeds from / payments of long-term debt - Purchases of common stock into treasury - Other, including exercise of stock options 3,523 ----- Net cash used by financing activities 3,523 ----- Net decrease in cash and cash equivalents (83,541) Cash and cash equivalents, beginning of period 104,484 ------- Cash and cash equivalents, end of period $ 20,943 ======== - more -

Add Eighteen ESCO TECHNOLOGIES INC. AND SUBSIDIARIES Other Selected Financial Data (Unaudited) (Dollars in thousands) Backlog And Entered Orders-Q2 FY 2006 Filtration Comm. Test Total - ----------------- ---------- ----- ---- ----- Beginning Backlog- 12/31/05 $ 80,196 127,814 60,663 268,673 Entered Orders 43,242 55,494 * 29,949 128,685 Sales (45,049) (43,239)* (34,596) (122,884) ------- ------- ------- -------- Ending Backlog- 3/31/06 $ 78,389 140,069 56,016 274,474 = == == ========= ======= ====== ======= Backlog And Entered Orders-YTD FY 2006 Filtration Comm. Test Total - ------------------ ---------- ----- ---- ----- Beginning Backlog 9/30/05 $ 80,497 87,781 64,836 233,114 Entered Orders 84,387 114,660 * 55,783 254,830 Sales (86,495) (62,372)* (64,603) (213,470) ------- ------- ------- -------- Ending Backlog- 3/31/06 $ 78,389 140,069 56,016 274,474 ========= ======= ====== ======= Q2 FY YTD FY 2006 Q2 FY 2006 YTD FY Entered 2006 Entered 2006 *Communications Recap: Orders Sales Orders Sales - ---------------------- ------ ----- ------ ------ AMR Products (DCSI) $38,765 36,342 84,405 51,760 SecurVision Video Security (Comtrak) 384 390 2,894 2,900 Nexus Energy 6,302 2,665 17,318 3,870(1) Hexagram 10,043 3,842(2) 10,043 3,842(2) ------ ------- ------ ------- Total 55,494 43,239 114,660 62,372 ====== ====== ======= ====== (1) Represents four months of sales. (2) Represents two months of sales. # # #