Gap Gauges | McMaster-Carr

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System of Measurement

Material

Stainless Steel

Thickness

Length

Leaf Length

Thicknesses Included

0.0005" (Silver)

0.0015" (Purple)

0.002" to 0.01" (0.001" Increments)

0.002" to 0.021" (0.001" Increments)

0.002" to 0.025" (0.001" Increments)

0.002" to 0.035" (0.001" Increments)

0.003" to 0.01" (0.001" Increments)

0.003" to 0.025" (0.001" Increments)

0.003" to 0.026" (0.001" Increments)

Width

Shape

Leaf Type

Gauge Size

Manufacturer

Number of Leaves

Maximum Thickness Measured

Thickness Measuring Increments

End Style

Display Type

RoHS

Compliant with Exemptions

Certificate Type

Accuracy Certificate Traceable to NIST

Calibration Certificate Traceable to NIST

Frame Material

Stainless Steel

Distance Measured

REACH

Gauge Block Grade

Measuring Sizes

Export Control Classification Number (ECCN)

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

How can we improve?

1,377 Products

Feeler Gauges

Starrett Tapered-Thickness Feeler Gauges

Starrett Tapered-Thickness Feeler Gauges

Check a range of thicknesses with a single tapered gauge

Feeler Gauge Sets

Feeler Gauge Sets

A variety of leaf thicknesses to confirm gaps are within tolerance

Starrett Tapered-Thickness Feeler Gauges with Calibration Certificate

Starrett Tapered-Thickness Feeler Gauges with Calibration Certificate

Check a range of thicknesses with a single tapered gauge

Starrett Feeler Gauge Sets

Starrett Feeler Gauge Sets

A variety of leaf thicknesses to confirm gaps are within tolerance

Tapered-Width Feeler Gauges

Tapered-Width Feeler Gauges

Confirm the size of slots, holes, and mating surfaces with a single tapered gauge

Ready-to-Use Feeler Gauges

Ready-to-Use Feeler Gauges

Check gaps, alignment, and narrow slots

Tapered-Thickness Feeler Gauges

Tapered-Thickness Feeler Gauges

Check a range of thicknesses with a single tapered gauge

Tapered-Width Feeler Gauge Sets

Tapered-Width Feeler Gauge Sets

Multiple tapered leaves in a range of widths to measure slots and holes

Wire, Width, and Thickness Feeler Gauge Sets

Wire, Width, and Thickness Feeler Gauge Sets

A variety of feeler gauges in one tool

Spark Plug Feeler Gauges

Spark Plug Feeler Gauges

Slide between the electrodes to measure the gap

Starrett Feeler Gauge Sets with Calibration Certificate

Starrett Feeler Gauge Sets with Calibration Certificate

A variety of leaf thicknesses to confirm gaps are within tolerance

Color-Coded Feeler Gauge Sets

Color-Coded Feeler Gauge Sets

Color coded by thickness so you can read measurements at a glance

Feeler Gauge Assortments

Feeler Gauge Assortments

A range of thicknesses to check gaps, alignment, and narrow slots

Color-Coded Feeler Gauges

Color-Coded Feeler Gauges

Color coded by thickness so you can read measurements at a glance

Plastic Clearance Feeler Gauges

Plastic Clearance Feeler Gauges

Squish between two components to measure the clearance between them

Feeler Gauge Sets for Tight Spaces

Feeler Gauge Sets for Tight Spaces

Narrow ends measure thickness where other gauges don’t fit

Starrett Feeler Gauge Sets for Tight Spaces

Starrett Feeler Gauge Sets for Tight Spaces

Narrow ends measure thickness where other gauges don’t fit

Starrett Feeler Gauge Sets for Tight Spaces with Calibration Certificate

Starrett Feeler Gauge Sets for Tight Spaces with Calibration Certificate

Narrow ends measure thickness where other gauges don’t fit

Feeler Gauge Rolls

Feeler Gauge Rolls

Cut to your desired length

Other Products

Caliper Depth Rods

Caliper Depth Rods

Attach to your caliper to measure depth

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

Calipers

Take inside, outside, and depth measurements with more precision than a ruler

Step Gauges

Check step height, gap width, and distance between slots to make sure machine and engine parts align

Precision Measuring Tool Sets

Precision Measuring Tool Sets

Multiple precision measuring tools in one convenient case

Height Gauges

Measure an object's height and mark workpieces for machining

Feeler Gauge Holders

Feeler Gauge Holders

Clamp onto your feeler gauge to keep it in position

Optical Comparators

Optical Comparators

Magnify your part to check for dimensional accuracy and surface defects

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)