Steel Feeler Gauges | McMaster-Carr

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System of Measurement

Thickness

Leaf Length

Thicknesses Included

0.002" to 0.01" (0.001" Increments)

0.002" to 0.021" (0.001" Increments)

0.002" to 0.035" (0.001" Increments)

0.0025"

0.003"

0.003" to 0.01" (0.001" Increments)

0.003" to 0.025" (0.001" Increments)

0.003" to 0.026" (0.001" Increments)

0.003" to 0.03" (0.001" Increments)

0.004"

0.004" to 0.025" (0.001" Increments)

0.004" to 0.027" (0.001" Increments)

Material

Number of Leaves

Leaf Type

Length

Closed Length

Width

End Style

Frame Material

Maximum Thickness Measured

Thickness Measuring Increments

Leaf Width

Number of Pieces

Closed Width

1/4"

1/2"

Manufacturer Model Number

Minimum Thickness Measured

Container Type

Export Control Classification Number (ECCN)

RoHS

REACH

DFARS Specialty Metals

Exempt

Maximum Tapered Gauge Thickness Measured

3/16"

5 mm

Tapered Gauge Thickness Measuring Increments

193 Products

Feeler Gauge Sets

Keep a variety of leaf thicknesses on hand to confirm gaps are within tolerance.

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.

Starrett Feeler Gauge Sets for Tight
Spots with Calibration Certificate

A certificate of calibration traceable to NIST states that these sets have passed a test for accuracy.

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.

Feeler Gauge Sets for Tight Spots

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

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.

Tapered-Width Feeler Gauge Sets

Check slot widths and hole diameters with the markings on these gauges. Leaves in a variety of sizes are riveted together in a fan design—spread them out for use or fold them in for portability.

Feeler Gauges

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.

Feeler Gauge Rolls

Cut to your desired length.

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.

Spark Plug Feeler Gauges

Keep spark plugs working efficiently. These feeler gauges slide between the electrodes to measure the gap.

Feeler Gauge Sets

Feeler Gauge Sets

Starrett Feeler Gauge Sets

Starrett Feeler Gauge Setswith Calibration Certificate

Starrett Feeler Gauge Sets for TightSpots with Calibration Certificate

Starrett Feeler Gauge Sets for Tight Spots

Feeler Gauge Sets for Tight Spots

Combination Wire, Width, andThickness Feeler Gauge Sets

Tapered-Width Feeler Gauge Sets

Feeler Gauges

Ready-to-Use Feeler Gauges

Feeler Gauge Assortments

Feeler Gauge Rolls

Starrett Tapered-Thickness Feeler Gauges

Starrett Tapered-Thickness FeelerGauges with Calibration Certificate

Tapered-Thickness Feeler Gauges

Spark Plug Feeler Gauges

Starrett Feeler Gauge Sets
with Calibration Certificate

Starrett Feeler Gauge Sets for Tight
Spots with Calibration Certificate

Combination Wire, Width, and
Thickness Feeler Gauge Sets

Starrett Tapered-Thickness Feeler
Gauges with Calibration Certificate