Tapered Ring Gages Instrument Information
A metallic ring machined to a precise taper, often containing a min and max line. The gage is inserted onto a tapered shaft. If the gage stops between the two lines, the machined part is in tolerance.

Common Uses
- Quick measurement of machined tapered shafts.
- Checking tapered plugs.
Common Types
- Self-Holding
- Self-Releasing
Measurement Parameter
- Inside Diameter (in, cm)
Gage Type
- Attribute
Calibration Discipline
Calibration Equipment Used
- Coordinate Measuring Machine (CMM)