Mount to a wall for easy access, and 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

Find thread size, screw size, diameter, and drill bit size with one tool.

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

In addition to checking NPT and BSPT pipe sizes, use the two included gauges for measuring thread pitch.

Determine pipe size and inner and outer diameter.

Measure drill bit sizes with these identifiers.

These have a go gauge on one end and a no-go gauge on the other end.

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

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

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.

Inspect fasteners and verify threads with this checker.

Set inside micrometers, dial bore gauges, and other precision tools.

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