Thread Wires Instrument Information
A small metallic wire used for measuring thread pitch diameter on a machined threaded part, often using the “three-wire method”. Often sold in sets

Common Uses
- Verifying external threads on things such as bolts.
- Measuring thread pitch diameter on thread plugs.
Common Types
- Varying Pitches
- Varying Lengths
Measurement Parameter
- Inside Diameter (in, cm)
- Threading
Gage Type
- Attribute
Calibration Discipline
Calibration Equipment Used
- Universal Linear Measuring (ULM) System