Set includes one dial head that fits onto three gauge bodies. Use them to measure the inside diameter of holes and cylindrical bores.

Use these gauges to measure the inside diameter of holes and cylindrical bores, as well as identify out-of-roundness problems.

Measure a variety of hole diameters. These sets include gauges that use spring tension to expand the probe’s contacts inside of bores.

Spring-loaded contacts on the end of the probe expand inside holes, making these bore gauges versatile enough for general checks.

Position these gauges snugly within your bore to measure its diameter. Spring tension pushes the gauge’s two telescoping steel contacts against the walls of your bore.

Measure the diameter of small holes, grooves, and recesses.

Find the inside diameter of cylinders and rings.

The jaws on these micrometers work like caliper jaws to precisely measure inner diameters.

With an LCD screen, these micrometers make it easy to read inside diameter measurements taken from cylinders and rings.

Find the inside diameter of cylinders and rings.

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.

Use these metric Class X plug gauges for precision go/no-go measuring of hole sizes and depths, checking hole location and distance, and setting micrometers. They’re also called pin gauges.

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.

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.

To indicate when you need to calibrate or replace the gauges in these sets, gauges have a black-oxide treatment that shows wear patterns.

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.

To measure thickness in areas where standard feeler gauges don’t fit, these sets have leaves with narrow ends.

Leaves have narrow ends to measure thickness where standard feeler gauges can’t fit.

These sets combine a wire gauge, a tapered-width feeler gauge, and a set of feeler gauges for tight spots in one tool.

A certificate of calibration traceable to NIST states that this gauge has passed a test for accuracy.

These have a go gauge on one end and a no-go gauge on the other end.

These gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

A true source of measurement, use these gauge blocks to calibrate measuring equipment, mark precise layouts, or position your fixture or machine components just right.

Use these Mitutoyo gauge block sets for precision layout, machine setup, and producing close-tolerance dies and fixtures.

Use these Starrett gauge block sets for precision layout, machine setup, and producing close-tolerance dies and fixtures.