Brass Feeler Gauges | McMaster-Carr

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Material

Length

Thickness

Number of Leaves

Thicknesses Included

0.001"

0.0015"

0.002"

0.002" to 0.01" (0.001" Increments)

0.0025"

0.003" to 0.026" (0.001" Increments)

Width

System of Measurement

Leaf Length

Leaf Type

Closed Length

Frame Material

End Style

Container Type

RoHS

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Exempt

REACH

Compliant

Closed Width

1/2"

Number of Pieces

Leaf Width

1/2"

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32 Products

Feeler Gauge Sets

With Flat Round Leaves

Keep a variety of leaf thicknesses on hand to confirm gaps are within tolerance. These gauges are often used to check the clearance around bearings and other machine parts, making sure there’s enough space to avoid friction and prevent wear. The leaves are riveted together in a folding fan design, so they’re easy to carry. Each leaf is marked with thickness for quick reference.

Steel and tool steel leaves are stronger, harder, and more wear resistant than stainless steel and brass leaves. Brass leaves have good corrosion resistance and are nonmarring to prevent scratches. They’re also nonmagnetic, so you can safely check spark plugs and other electronic ignitions without attracting debris.

Sets with both steel and brass leaves include 30 steel leaves and six brass leaves.

Sets with a leaf-securing lock hold individual leaves in place so they don’t move and disrupt measurements.

		Leaf		Closed
No. of Leaves	Thick.	Lg.	Wd.	Lg.	Wd.	Features		Each
Flat Round Leaves
Brass
6	0.006", 0.008", 0.01", 0.012", 0.014", 0.016"	2 5/8"	1/2"	3"	1/2"	__	00000000	00000
Steel and Brass
36	Steel: 0.002", 0.0025", 0.003" to 0.026" (0.001" increments), 0.028", 0.03", 0.032", 0.035", Brass: 0.006", 0.008", 0.01", 0.012", 0.014", 0.016"	3"	1/2"	3 7/16"	1/2"	Leaf-Securing Lock	00000000	00000

Ready-to-Use Feeler Gauges

Check gaps, alignment, and narrow slots. These feeler gauges have finished ends marked with thickness.

Brass gauges have good corrosion resistance.

				Each
Thick.	Lg.	Wd.		1-11	12-Up
Brass
0.001"	12"	1/2"	00000000	00000	00000
0.002"	12"	1/2"	00000000	0000	0000
0.003"	12"	1/2"	00000000	0000	0000
0.004"	12"	1/2"	00000000	0000	0000
0.005"	12"	1/2"	00000000	0000	0000
0.006"	12"	1/2"	00000000	0000	0000
0.007"	12"	1/2"	00000000	0000	0000
0.008"	12"	1/2"	00000000	0000	0000
0.009"	12"	1/2"	00000000	0000	0000
0.01"	12"	1/2"	00000000	0000	0000
0.015"	12"	1/2"	00000000	0000	0000
0.02"	12"	1/2"	00000000	0000	0000
0.025"	12"	1/2"	00000000	0000	0000
0.032"	12"	1/2"	00000000	0000	0000

Feeler Gauge Assortments

Use these feeler gauge assortments to check gaps, alignment, and narrow slots. They have finished ends marked with thickness.

Brass gauge assortments have good corrosion resistance.

Brass
No. of Pieces	Thick.	Lg.	Wd.	Container Type		Each
20	0.001", 0.0015", 0.002" to 0.01" (0.001" increments), 0.012", 0.014", 0.015", 0.016", 0.018", 0.02", 0.023", 0.025", 0.03"	6"	1/2"	Pouch	0000000	000000
20	0.001", 0.0015", 0.002" to 0.01" (0.001" increments), 0.012", 0.014", 0.015", 0.016", 0.018", 0.02", 0.023", 0.025", 0.03"	12"	1/2"	__	0000000	00000

Feeler Gauge Rolls

Cut to your desired length. These gauge rolls let you check gaps, alignment, and narrow slots. Thickness is marked every 6 inches.

Brass gauge rolls have good corrosion resistance.

Brass
Thick.	Lg., ft.	Wd.	Container Type		Each
0.001"	10	1/2"	Dispenser Box	000000	000000
0.002"	10	1/2"	Dispenser Box	000000	00000
0.003"	10	1/2"	Dispenser Box	000000	00000
0.004"	10	1/2"	Dispenser Box	000000	00000
0.005"	10	1/2"	Dispenser Box	000000	00000
0.006"	10	1/2"	Dispenser Box	000000	00000
0.007"	10	1/2"	Dispenser Box	000000	00000
0.008"	10	1/2"	Dispenser Box	000000	00000
0.009"	10	1/2"	Dispenser Box	000000	00000
0.01"	10	1/2"	Dispenser Box	0000000	00000
0.015"	10	1/2"	Dispenser Box	0000000	00000
0.02"	10	1/2"	Dispenser Box	0000000	00000
0.025"	10	1/2"	Dispenser Box	0000000	00000
0.032"	10	1/2"	Dispenser Box	0000000	00000