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

Common Uses
- Quick measurement of machined tapered holes.
Common Types
- Self-Holding
- Self-Releasing
Measurement Parameter
- Inside Diameter (in, cm)
Gage Type
- Attribute
Calibration Discipline
Calibration Equipment Used
- Universal Linear Measuring (ULM) System