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 Class Z no-go gauges help you check the maximum hole diameter. Commonly known as pin gauges, use them to measure hole size and depth, check hole location and distance, and set micrometers.

A black-oxide treatment on these go gauges shows wear patterns so you can tell when you need to calibrate or replace the gauge—use them to check to minimum 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 go and no-go measurements with the same tool. These gauges have a go gauge on one end, a no-go gauge on the other end, and a handle with bushings.

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

Determine if lead nuts, screw collars, and other parts with internal Acme threads are within tolerance. These gauges are attached to a handle to help you quickly thread or unthread them.

Speed up checking thread tolerances by threading a go gauge on one end of these handles and a no-go gauge on the other.

Test thread tolerance in seconds. A time-saver for high-volume work, these drivers quickly thread gauges in and out of holes for you—just pull the trigger.

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

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.

Use on external and internal fastener threads.

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.

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