Thread your fastener into holes or onto plugs for quick and accurate size identification.

Determine threads per inch and thread pitch on a variety of external and internal threads.

Use on external and internal fastener threads.

Identify threads per inch on external threads and find the center of your workpiece to line up thread cutting tools.

Check external NPT thread size and taper.

Find tube, pipe, fastener, wire, and drill bit sizes with one tool.

Check a part’s external threads to ensure they fall within tolerance.

To ensure accuracy of NPT pipe thread measurements, these gauges include a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

A certificate of calibration traceable to NIST states that these gauges have passed a test for accuracy.

These gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

Use these gauges to check the outside diameter of shafts, rods, and other cylindrical objects to determine whether they’re in tolerance.

These micrometers come with a calibration certificate traceable to NIST that states they've passed a test for accuracy.