Crest Check Ring Gage Instrument Information
A precisely machined metallic gage used for checking the crest dimensions of threaded machined parts. The gage is machined smooth and checks the limits and taper of the minor diameter of a threaded part.

Common Uses
Measuring the minor diameter of a threaded part, such as in a bolt, pipe or screw.
Common Types
- Roller Type (Full, Half, Quarter, Threaded)
- Indicator Type (Dial, Test)
- Drive System (Manual, Motorized)
Measurement Parameter
- Inside Diameter
- Threading
Gage Type
Attribute
Calibration Discipline
Calibration Equipment Used
Universal Linear Measuring (ULM) System