Measuring by comparison

Feeler gaugeFeeler gauge

Also called: thickness gauge (leaf type), clearance gauge, feeler gauge

Illustration of using a feeler gauge

≡Standards, measuring range and accuracy

Standard
JIS B 7524:2008 Feeler gauges[1]1 source, for reference
Measuring range
—Not confirmed in public sources
Resolution / graduation
—Not confirmed in public sources
Accuracy (instrument error / maximum permissible error)
—Not confirmed in public sources

▦Types

Leaves bundled together (shapes A, B, etc.)

No primary-source text was foundNot confirmed in public sources

◎Part names and functions

#NameEnglishFunction
1Leaves (thin plates stamped with their thickness)

◷How to read the scale

  1. Read the thickness stamped on the leaf (primary source not confirmed)

✋Usage steps

  1. No primary-source text on usage was found. Niigata Seiki publishes a video 'How to use thickness gauges'[2]

✓Care, storage, inspection and calibration

Care and storage

Inspection and calibration

Beware of name confusion: Mitutoyo's 'thickness gauge' (shikkunesu gauge) is a dial-type thickness gauge that clamps between an anvil and a spindle (Mitutoyo has a usage page), and is a different thing from the JIS 'feeler gauge' (leaf type). Niigata Seiki's 'thickness gauge' (shikunesu gauge) is used as a name for the leaf type.

⇄Related instruments

📚Sources

Content without a mark is what agreed across two or more sources from different publishers. Procedures and cautions are summarized in Kezuriba's own words based on the sources, and the diagrams were drawn by Kezuriba. Accuracy values are manufacturers' published figures, not values from JIS tables.

  1. Japanese Standards Association (JSA), "JIS B 7524:2008 Feeler gauges (bibliographic record)"
  2. Niigata Seiki, "Measuring Tools How-to Videos (list)"