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

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

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

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

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.

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.

Check that holes tapped for helical threads are within tolerance. To speed up tests, these gauges have a go gauge on one end and a no-go gauge on the other.

Verify whether pipe fitting threads fall within tolerance. These gauges are attached to a handle, giving you a solid gripping point to thread and unthread them quickly.

Test if internal threads fall within tolerance.

Confirm that external pipe threads are sized within tolerance.

These gauges come with a certificate that’s traceable to NIST, confirming they were calibrated in a lab. Use them to verify whether external pipe threads are within tolerance.

Join two ring gauges with different sizes to quickly check if threads are within tolerance. Secure your gauges to these holders with the included fasteners.

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