Process Instruments Inc. Calibration of pressure, temperature, electronic, infrared, dimensional, resistance, optical pyrometry. A Division of Process Instruments Inc. http://www.calibrationlaboratory.com

Protrol Instrumentation Ltd Independent calibration, testing and measurement laboratory specializes in pressure, temperature, electrical, mass, force, torque, humidity, and dimensional measurement. http://www.protrol.co.uk/

Pyrometer Equipment Co. Inc. A calibration and testing facility specializing in on-site temperature, pressure, service and certification of process instrumentation servicing the New Jersey, New York and Pennsylvania area. http://www.pyrometerequipment.com

Technical Specialties Company Provide a calibration service for all your measuring instruments, supplying you with permanent records consisting of a card http://www.technicalspecialtiesco.com

Temperature calibration and metrology equipment Supplier of temperature calibration and metrology equipment to laboratories world-wide. http://www.aslltd.co.uk

Thunder Scientific Manufacturer of humidity generators and humidity calibration equipment. http://www.thunderscientific.com

TrigasFI Calibration of flowmeters for liquids and gases. Repair and service of turbine flowmeters. Consulting and training seminars on flow measurement and calibration. http://www.trigas.net

Yankee Controller Service Provides industry with quality process instrumentation sales, calibration, services, training. http://www.yankeecontroller.com