Accelr8 Technology Corporation [AXK]
Admiralty Holding Company [ADMH.PK]
Aetrium Incorporated [ATRM]
Affymetrix, Inc. [AFFX]
Agilent Technologies, Inc. [A]
Ahura Scientific, Inc.
Allied Motion Technologies Inc. [AMOT]
Alpha Sensors, Inc.
Analogic Corporation [ALOG]
Applied Energetics, Inc. [AERG]
Applied Precision, Inc.
Argon ST, Inc. [STST]
Arizona Instrument LLC
Arryx, Inc.
Axsys Technologies, Inc. [AXYS]

Badger Meter, Inc. [BMI]
Beckman Coulter, Inc. [BEC]
Bio-Rad Laboratories, Inc. [BIO]
Blue Sky Research, Incorporated
Broadley-James Corporation
Bruker Corporation [BRKR]
Bruker Daltonics Inc.

Caliper Life Sciences, Inc. [CALP]
Cambridge Research & Instrumentation, Inc.
Camtek Ltd. [CAMT]
Canberra Industries, Inc.
Celera Corporation [CRA]
CEM Corporation
Cepheid [CPHD]
Cognex Corporation [CGNX]
Coherent, Inc. [COHR]
Comverge, Inc. [COMV]
Cubic Corporation [CUB]
CyberOptics Corporation [CYBE]

Data I/O Corporation [DAIO]
Digital Ally, Inc. [DGLY]
Dionex Corporation [DNEX]
Dynasil Corporation of America [DYSL.OB]

Electro-Sensors, Inc. [ELSE]
eMagin Corporation [EMAN.OB]
ESCO Technologies Inc. [ESE]

FARO Technologies, Inc. [FARO]
FEI Company [FEIC]
FLIR Systems, Inc. [FLIR]

Garmin Ltd. [GRMN]
Giga-tronics Incorporated [GIGA]
GSI Group Inc. [GSIG]

Hamilton Thorne Biosciences, Inc.
Harvard Bioscience, Inc. [HBIO]
Herley Industries, Inc. [HRLY]
Hickok Incorporated [HICKA.OB]
Hurco Companies, Inc. [HURC]

ICx Technologies, Inc. [ICXT]
II-VI Incorporated [IIVI]
International Isotopes Inc. [INIS.OB]
Inverness Medical Innovations, Inc. [IMA]
Invisa, Inc. [INSA.OB]
ION Geophysical Corporation [IO]
IRIS International, Inc. [IRIS]
Isomet Corporation [IOMT.PK]
Itron, Inc. [ITRI]

JEOL Ltd.
JEOL USA, Inc.
JMAR Technologies, Inc. [JMAR.PK]

K-Tron International, Inc. [KTII]
Keithley Instruments, Inc. [KEI]
Kewaunee Scientific Corporation [KEQU]
Kinetic Systems, Inc.
Kore Technology Limited

L-3 EOTech, Inc.
L-3 SSG-Tinsley
LaBarge, Inc. [LB]
LeCroy Corporation [LCRY]

Matech Corp. [MTCH.OB]
Meade Instruments Corp. [MEAD]
Measurement Specialties, Inc. [MEAS]
Mettler-Toledo International Inc. [MTD]
Microfluidics International Corporation [MFLU.OB]
Millipore Corporation [MIL]
MOCON, Inc. [MOCO]
MTS Systems Corporation [MTSC]

Nanometrics Incorporated [NANO]
Newport Corporation [NEWP]
nPoint, Inc.

O. I. Corporation [OICO]
ORBIT/FR, Inc. [ORFR.OB]
Orbotech Ltd. [ORBK]
Oxford Instruments plc
OYO Geospace Corporation [OYOG]

PANalytical B.V.
Perceptron, Inc. [PRCP]
Picarro, Inc.
pSivida Corp. [PSDV]

Quantel SA
Quantum Design, Inc.

RAE Systems Inc. [RAE]
ROFIN-SINAR Technologies Inc. [RSTI]
Rudolph Technologies, Inc. [RTEC]

Schmitt Industries, Inc. [SMIT]
Scientific Industries, Inc. [SCND.OB]
Sensor Developments Inc.
Sepragen Corporation [SPGNA.PK]
Shimadzu Corporation
Shimadzu Scientific Instruments, Inc.
Sierra Monitor Corporation [SRMC.OB]
Sono-Tek Corporation [SOTK.OB]
Spectra-Physics
StockerYale, Inc. [STKR.OB]
Sutron Corporation [STRN]
Syagen Technology, Inc.
Sypris Solutions, Inc. [SYPR]

Taylor Precision Products L.P.
Techshot, Inc.
Tel-Instrument Electronics Corp. [TIK]
Teledyne Benthos
Teledyne Isco, Inc.
The LGL Group, Inc. [LGL]
Thermo Fisher Scientific Inc. [TMO]
Thrane & Thrane A/S
Tinsley Laboratories, Inc.
Trans-Lux Corporation [TLX]
Transcat, Inc. [TRNS]
Transgenomic, Inc. [TBIO.OB]
Trimble Navigation Limited [TRMB]
TSI Incorporated

Universal Detection Technology [UNDT.OB]

Varian, Inc. [VARI]
Vulcan Electric Company

Waters Corporation [WAT]
Winland Electronics, Inc. [WEX]
Wireless Telecom Group, Inc. [WTT]

Zygo Corporation [ZIGO]
Zyvex Corporation