Thickness Gauges | McMaster-Carr

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405 Products

Feeler Gauges

Feeler Gauge Rolls

Cut to your desired length.

Ready-to-Use Feeler Gauges

Gauges are 12” long and have finished ends marked with thickness.

Feeler Gauge Assortments

Use these feeler gauge assortments to check gaps, alignment, and narrow slots.

Starrett Tapered-Thickness Feeler Gauges

Check a range of thicknesses with a single tapered gauge.

Starrett Tapered-Thickness Feeler
Gauges with Calibration Certificate

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

Tapered-Thickness Feeler Gauges

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

Color-Coded Feeler Gauges

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

Feeler Gauge Holders

Keep your feeler gauge in position with the cam-lock clamps on these holders.

Feeler Gauge Sets

Starrett Feeler Gauge Sets

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.

Starrett Feeler Gauge Sets with Calibration Certificate

To ensure accurate readings, these sets come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

Economy Feeler Gauge Sets

To keep the set complete, gauge leaves are riveted together in a fan design that folds up for portability.

Color-Coded Feeler Gauge Sets

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

Starrett Feeler Gauge Sets for Tight Spots

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

Starrett Feeler Gauge Sets for Tight
Spots with Calibration Certificate

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

Economy Feeler Gauge Sets for Tight Spots

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

Tapered-Width Feeler Gauge Sets

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

Combination Wire, Width, and
Thickness Feeler Gauge Sets

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

Plastic Clearance Gauges

Squish these tiny plastic strips between two components to measure the clearance between them. Once compressed, match the widest part of the flattened strip to the markings on the paper gauge. Each marking on the gauge corresponds to a different clearance measurement.

Electronic Thickness Gauges

Measure the thickness of sheet metal, paper, and other flat stock, and read the values on an LCD.

Electronic Thickness Gauges with Calibration Certificate

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

Electronic Thickness Gauges for Pipe and Tubing

Measure the wall thickness of pipe, tubing, and other curved surfaces with these gauges.

Electronic Thickness Gauges for Pipe
and Tubing with Calibration Certificate

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

Electronic Thickness Gauges for
Pipe, Tubing, and Flat Surfaces

A reversible anvil lets you adapt the gauge to the shape of the object you are measuring. Use the round face on the anvil to measure the wall thickness of pipe, tubing, and other curved surfaces. Use the flat face to measure sheet metal, paper, and other flat stock.

Electronic Thickness Gauges for Pipe, Tubing,
and Flat Surfaces with Calibration Certificate

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

Long-Reach Electronic Thickness Gauges

An extra-deep throat provides a long reach for measuring sheet metal and other large items.

Long-Reach Electronic Thickness
Gauges with Calibration Certificate

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

Pocket Electronic Thickness Gauges

Small enough to fit between your thumb and index finger, use these gauges for quick thickness checks.

Pocket Electronic Thickness
Gauges with Calibration Certificate

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

Dial Thickness Gauges

Check measurements at a glance.

Dial Thickness Gauges with Calibration Certificate

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

Economy Pocket Dial Thickness Gauges

Small enough to fit between your thumb and index finger, use these gauges for quick thickness checks on paper, film, and other flat stock.

Starrett Pocket Dial Thickness Gauges

Small enough to fit between your thumb and index finger, use these Starrett gauges for quick thickness checks on paper, film, and other flat stock.

Starrett Pocket Dial Thickness
Gauges with Calibration Certificate

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

Ultrasonic Thickness Gauges

Measure the thickness of material such as metal and plastic. The ultrasonic probe provides highly accurate readings.

Ultrasonic Hazardous Location
Painted-Surface Thickness Gauges

Rated for environments where hazardous material is present, these gauges measure the thickness of steel, stainless steel, and aluminum.

Ultrasonic Painted-Surface Thickness Gauges

Measure the thickness of painted metal without removing the coating.

Mitutoyo Data Management Devices and Cables

Mitutoyo Wireless Transmitters

Wirelessly transmit measurement data to a PC.

Mitutoyo USB Cables

Use these cables to connect measuring tools with SPC data output directly to a PC.

Wire and Sheet Metal Size Identifiers

Read gauge numbers on one side of these identifiers and their decimal equivalents on the other.

Coating-Thickness Gauges

Wet-Coating-Thickness Gauges

Measure the thickness of wet coatings such as paint.

Coating-Thickness Gauges for Hard-to-Reach Areas

This pen-shaped gauge is good for use on hard-to-reach surfaces and comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy.

Economy Coating-Thickness
Gauges for Hard-to-Reach Areas

This pen-shaped gauge is good for use on hard-to-reach surfaces.

Coating-Thickness Gauges

Use these gauges to measure nonmagnetic coatings such as paint, galvanizing, plating, and enamel on steel.

Digital Coating-Thickness Gauges
with Certificate of Calibration

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

Digital Coating-Thickness Gauges

Measure coatings such as paint, galvanizing, plating, and enamel and see the readings displayed on an easy-to-read digital screen.

Feeler Gauges

Feeler Gauge Rolls

Ready-to-Use Feeler Gauges

Feeler Gauge Assortments

Starrett Tapered-Thickness Feeler Gauges

Starrett Tapered-Thickness FeelerGauges with Calibration Certificate

Tapered-Thickness Feeler Gauges

Color-Coded Feeler Gauges

Feeler Gauge Holders

Feeler Gauge Sets

Starrett Feeler Gauge Sets

Starrett Feeler Gauge Sets with Calibration Certificate

Economy Feeler Gauge Sets

Color-Coded Feeler Gauge Sets

Starrett Feeler Gauge Sets for Tight Spots

Starrett Feeler Gauge Sets for TightSpots with Calibration Certificate

Economy Feeler Gauge Sets for Tight Spots

Tapered-Width Feeler Gauge Sets