Jingstone Enterprise CO., Ltd.
Manufacturer of length calibrator, electronic dial and gauge calibrator, checkmaster gauges, micrometers, calipers, dial gauges. Contains information on products.
http://www.metrology.com.tw

Practical Instrument Electronics, Inc.
Practical Instrument Electronics (PIE) manufactures, repairs, and recalibrates Milliamp (mA), Voltage (V), RTD, Thermocouple (T/C), Frequency, and Multifunction handheld calibrators
http://www.piecal.com/

Krohn-Hite Corporation
Manufacturer of electronic test and measurement tools; such as filters, amplifiers, wideband calibrator, standards, references, simulators, phasemeter, phase angle controllers and power meters.
http://krohn-hite.com/

Morehouse Instrument Co, Inc.
Morehouse Instrument Co. provides ISO 17025, ASMT E74 and ISO 376 calibration services using Dead Weight Calibrations up to 120,000 LBF. Whether you need a force gage or load cell calibration, measurement, or measuring system, we have the equipment needed.
http://www.mhforce.com/

E. and E. Elektronik
Messtechnik für Feuchte, Taupunkt, Luftgeschwindigkeit, Strömung, CO2, Temperatur und Kalibration
http://www.epluse.com/

UST Research Inc.
Solutions for Hardware & Software, industrial equipment and portable devices.
http://www.ustr.net

Presys Instruments Inc.
Presys is an ISO9001 certified company specialized in instrumentation and process control producing calibrators, indicators, controllers, softwares to meet customers needs for reliability and accuracy
http://www.presys.com.br/

Dresser Instruments
Manufactures pressure gauges and temperature measuring instruments; transducers and transmitters; control instruments; bimetal thermometers; test equipment; calibrators and instrument isolators.
http://www.dresserinstruments.com/

Automatic Timing and Controls
Manufacturer of industrial instrumentation products including timing and control, panel meters, printers, calibrators, tachometers, phase monitors, and motor protection devices.
http://www.automatictiming.com/

Olympic Controls Inc
Designers and manufacturers of process and energy control instruments such as; pressure calibrators, flow computers, totalizers, process controllers, energy computers, transmitters, and custom controls.
http://www.oci-texas.com/