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

Set includes calipers and gauges to identify external and internal threads

Use on external and internal fastener threads.

Identify Acme threads and use as a guide while grinding and cutting Acme threads to a 29° included angle.

Check external NPT thread size and taper.

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

A notch on the handle indicates when the internal NPT threads you’re checking are in tolerance.

Ensure the accuracy of NPT thread measurements—these gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

Check a part’s external threads to make sure they fall within tolerance. You can use these for bolts, threaded rods, bits, and more.

Not only were these gauges calibrated in a lab, but they also come with a certificate that's traceable to NIST.

Measure thread accuracy in screw-cutting operations. The anvil and spindle have a 60° point for fitting into thread grooves.