Also known as pin gauges, these Class X plug gauges are used for precision go/no-go measuring of hole sizes and depths, checking hole location and distance, and setting micrometers.

These metric Class Z plug gauges are used for precision go/no-go measuring of hole sizes and depths, checking hole location and distance, and setting micrometers. They’re also known as pin gauges.

The black-oxide treatment on these no-go gauges shows wear patterns so you can tell when you need to calibrate or replace the gauge—they help you check the maximum hole diameter.

Get your choice of one target-size gauge with 12 larger gauges and 12 smaller gauges, graduated in 0.0001”. Use these sets to measure hole sizes and depths, check hole locations and distance, and set micrometers.

Take precision go/no-go measurements of hole sizes and depths, check hole location and distance, and set micrometers.

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.

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

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 a variety of external and internal threads.

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

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.

These rod sets are supplied in a metal index case with fold-out panels.