Limit gauges and size gauges

Pin gaugePin gauge (plug gauge pin)

Also called: pin gauge set, steel pin gauges, carbide pin gauges

≡Standards, measuring range and accuracy

Standard

Not confirmed in public sourcesNo standalone JIS for pin gauges could be found (no standard name on the Niigata Seiki product page either)

Measuring range

byMaker
- Niigata Seiki PG series 0.100–0.290 mm (0.010 steps), 0.300–1.525 mm (0.025 steps), 1.550–6.275, 6.300–9.775, 9.800–12.525 mm (0.025 steps), etc.

^[1]1 source, for reference

Resolution / graduation

byMaker
- Niigata Seiki PG series Set size interval 0.010 mm or 0.025 mm

^[1]1 source, for reference

Accuracy (instrument error / maximum permissible error)

byMaker
- Niigata Seiki PG series (steel) Made 2–5 µm plus or minus of the nominal size. φ2.700 mm and up are sub-zero treated

^[1]1 source, for reference

▦Types

Steel and carbide pin gauges, with shank, singles and sets

^[1]1 source, for reference

Made on the plus side (+) or the minus side (−) of the nominal size

^[1]1 source, for reference

◎Part names and functions

#	Name	English	Function
1	Pin body (from 1.000 mm up, marked with +/− and the dimension)	Pin	Passed through a hole to check its diameter.^[1]

◷How to read the scale

Judge the hole diameter range from the dimensions of the pin that passed and the pin that did not (not confirmed in primary-source text)

✋Usage steps

Use: checking the accuracy of hole diameters, etc.^[1]
No primary-source text on the procedure or on how much force to use was found. Niigata Seiki publishes videos 'How to use pin gauges' and 'How to use pin vises'^[2]

Printed from Kezuriba (kezuriba.net/en/gauges/pin-gauge/)

!Common measurement mistakes and countermeasures

Holding by hand for a long time (thermal expansion) / forcing it in

WhyOSG's general cautions for limit gauges list dimensional change from hand heat, and accidents where a gauge forced through cannot be removed

CountermeasureUse gloves and a pin vise. Do not use force (not a statement specific to pin gauges)^[3]

✓Care, storage, inspection and calibration

Care and storage

Clean and rust-proof after use (as a general gauge caution)^[3]

Inspection and calibration

No primary source on a calibration procedure specific to pin gauges was foundNot confirmed in public sources

Usage exists only in video (Niigata Seiki); primary sources in text are lacking.

⇄Related instruments

Limit plain gauges (plug gauge, ring gauge, snap gauge)Dial bore gauge Three-point inside micrometer (bore micrometer)

📚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.