Pratt & Whitney
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Pratt & Whitney Measurement Systems, Inc.
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Step Gauges / Gauge Bars / Surveillance Masters
Step Gauges / Gauge Bars / Surveillance Masters

Step Gauges / Gauge Bars / Surveillance Masters


Pratt & Whitney's wide array of measuring instruments gives us the capability to measure an assortment of special metrology artifacts and gauge masters for Coordinate Measuring Machines (CMM).  Internal and external measuring capacities up to 80 inches [2032 mm] are available.   

Surveillance Masters Include:

  • Standard Reference Bars
  • Check Masters
  • Gage Block Stacks
  • Step Gauge Calibration
  • Sphere Plates
  • Precision Length Bars
  • Ball Bars
  • Sphere Beams
  • Measuring Machine Button Bars 
  • Ball Cubes

Pratt & Whitney Gage Calibration Laboratory

Pratt & Whitney’s ring gage calibration service is accredited by the American Association for Laboratory Accreditation (A2LA/cert# 2629.01) to meet all applicable requirements of the international standard ISO 17025, and boasts some of the lowest uncertainties outside of NIST.  Any calibration performed at Pratt & Whitney Measurement Systems Calibration Laboratory will produce NIST traceable values with comparatively low uncertainties due to our careful consideration of outside influences such as environmental.  Pratt & Whitney's calibration laboratory is modeled after military calibration facilities, and includes features such as a plenum ceiling, multiple temperature sensors, sealed double doors (airlock), high accuracy barometers, data-recording thermometers, and vibration attenuating granite tables.   

To Schedule a Calibration

  •  Call the Pratt & Whitney Calibration Department at (860) 286-8181 x400 or fill out our Contact Form.


ISO 17025 Accredited