Mount to a wall for easy access, and thread your fastener into holes or onto plugs for quick and accurate size identification.

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

Determine threads per inch and thread pitch on a variety of external and internal threads.

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.

Wrap these pocket-size tape measures around pipe and fittings to determine size.

Measure drill bit sizes with these identifiers.

Measure the outside diameter of small round- and hex-shaped objects such as rods, drill bits, bolts, and tubing with this pocket-size tool.

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.

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.

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

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

Width markings on the leaves let you check diameters and widths.

With leaves that are color coded based on thickness, you can read your measurements at a glance.

Check gaps, alignment, and narrow slots with these feeler gauge sets that include leaves in a variety of thicknesses riveted together in a fan design.

Since each thickness is a different color, there’s no need to read the feeler gauge to tell your measurement.

Replace an entire feeler gauge set with one of these tapered gauges that lets you check a range of thicknesses.

Cut to your desired length.

Check a range of thicknesses with a single tapered gauge.

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

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.

Also known as tree tapes, wrap these tape measures around circular items to determine diameter and measure circumference without the need for calculations.

Also known as tree tapes, wrap these tape measures around circular items to measure the circumference and determine the diameter without any calculations. The blade automatically retracts unless it’s looped onto something or the lock is engaged.

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

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

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

Kits contain Industrial quick-disconnect plugs in four coupling sizes so you can determine the size of your couplings without needing to measure.

Place an O-ring onto one of these plastic sizing cones to determine the size of your O-ring.

Quickly determine the size of any belt.