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.

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.

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.

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

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.

Test if the left-hand threads on parts fall within tolerance.

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

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