WaveFront Sciences
Shack-Hartmann wavefront sensors, laser metrology, ophthalmic instruments, semiconductor wafer metrology instruments and micro-optics.
http://www.wavefrontsciences.com

Precision Measurements, Inc.
Full-service calibration laboratory provides NIST-traceable calibrations of metrology instruments, field test instruments, mechanical instruments, and process controls.
http://www.calservice.net/

Inter-American Metrology System
Agreement among national metrology organizations, whose goal is to promote international and regional cooperation in the Americas for scientific, industrial and legal metrology. Includes overview, organizational structure and meetings.
http://www.sim-metrologia.org.br/

Digital Metrology Solutions
Providing dimensional and surface metrology systems integration, software, consultation and training. Surface metrology freeware available at website.
http://www.digitalmetrology.com

Czech Metrological Institute
National metrological body active in fundamental metrology, calibration of measuring instruments, type approvals of legal measuring instruments, and their verification and inspection. Contacts for laboratories throughout the republic, from Prague.
http://www.cmi.cz/

Foothill Instruments, LLC
Foothill Instruments manufactures thick film metrology systems.
http://www.foothill-instruments.com

Omega Metrology Limited
Manufactures electronic equipment and instruments, transducers and gauges for use in the manufacturing industry.
http://www.omegametrology.co.uk

IET Labs, Inc.
In the GenRad Tradition... Cost-effective custom solutions for R-L-C, RTD, Voltage and Current – pushing the specification envelope for you. An A2LA Accredited Calibration Laboratory.
http://www.ietlabs.com/

DuganTech.com
Sensors and Instruments - Metrology Instrumentation - Temperature, Pressure, Humidity
http://www.dugantech.com/

Taylor Hobson
Taylor Hobson Precision - Metrology, the science of measurement; science or system of weights and measures. Parameters can be separated into three basic types: Amplitude parameters, Spacing parameters and Hybrid parameters. The purpose of a parameter is to apply a number that can characterise and hence remove the need for somebody’s subjective assessment of the surface texture.
http://www.taylor-hobson.com/