Mount to a wall for easy access, and thread your fastener into holes or onto plugs for quick and accurate size identification.

Determine threads per inch and thread pitch on nuts, bolts, and other fasteners.

Set includes calipers and gauges to identify external and internal threads

Speed up thread tolerance checks—the handle on these gauges gives you a good grip to quickly thread and unthread go or no-go gauges.

A go and no-go gauge in one, these gauges check that left-hand threads fall within tolerance.

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

Calibrated in a lab and backed by a certificate traceable to NIST, these gauges check if left-hand threads fall within tolerance.