Check a variety of hole, groove, and slot diameters. Each gauge in these sets has a different measuring range.

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

Versatile enough for general checks, these bore gauges have spring-loaded contacts on the end of their probe to expand inside holes.

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

Find the inside diameter of cylinders and rings.

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.

Short, narrow contacts allow these calipers to take hard-to-reach measurements, such as the dimensions of internal grooves and slots.

Measure the inside diameter of holes and cylindrical bores, as well as identify out-of-roundness problems.

Check for sizing errors in small slots and holes. These bore gauges are often used in precision manufacturing to test electronics and small-scale prototypes.

Test for size deviations across a range of hole diameters.

With a short stem, these gauges easily maneuver in shallow holes and are compact enough to slip into your pocket. Use them to check the diameter and roundness of a hole.

Find a hole’s ID without having to compare it against a set measurement like you do with dial bore gauges.

Whether a chamfered edge is in a screw hole or on the end of a rotary shaft, these gauges find its diameter. The calculated diameter displays on the LCD screen for quick readings.

Keep over two dozen different ball diameters on hand to check bore sizes or use as go/no-go gauges.

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

The dial displays measurements in both decimal and fractional increments.

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

Protect sensitive electronics from damage while you take accurate measurements.

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

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

Deep jaws and extra-long measuring ranges make measuring large material easier.

Take inside and outside measurements by moving the jaw along the ruler.

These calipers have a mechanism which allows you to make finer adjustments.

Jaws move only when the thumb lock is depressed.

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