GO-NO GO pin gauges also called plug pin gauges, pin gauges, non-standard pin gauges. As standard tool for inner hole testing and calibration of measuring instruments and gauge, our steel and ceramic pin gauges sets of 41 pcs/set or 51pcs/set have below characteristics:

Good consistency, stable quality, usual tolerances +/-0.001mm.

Customized choice: +/-0.0005mm, +/-0.002mm, +0.005mm, -0.005 mm.

Dimension very stable after -198℃ ultra-cold treatment.

With high hardness due to multiple-heat treatment process.

Anti-rust, anti-corrosion and no magnetism- good for medical and food industry use.