Vermont Gage 112422490 Class Zz Minus Plug Pin Gage 22.49mm

Product Description

The VERMONT GAGE 112422490 is a Class ZZ Minus plug pin gage machined from steel and used to verify bore diameters with high dimensional accuracy. Designed for NoGo inspection applications, this pin gage checks that a bore or hole has not been machined undersized, making it a reliable go/no-go decision tool on the shop floor or in a quality lab. The gage measures 22.49 mm in diameter with a tolerance of 0.00508 mm and an overall length of 2 inches. Each unit ships with a Certificate of Accuracy traceable to NIST standards, supporting documented quality control processes.

This pin gage is suited for dimensional inspection in machining, manufacturing, and metrology environments. It is commonly used alongside set micrometers, verniers, and other precision measuring devices to verify hole tolerances during in-process or final inspection. The Class ZZ classification indicates a general-purpose tolerance grade appropriate for production-level inspection rather than master gage applications. Machinists, quality technicians, and metrologists working in job shops, production facilities, or tool rooms will find this gage a standard part of a bore inspection workflow.

Key Features

• Class ZZ Minus tolerance grade - designed for NoGo bore inspection
• 22.49 mm measurement diameter with 0.00508 mm tolerance
• Steel construction for durability and dimensional stability
• 10 micro coating finish for corrosion resistance and surface protection
• Includes Certificate of Accuracy with NIST traceability for documentation compliance
• Compatible with set micrometers, verniers, and standard measuring device setups

Compatibility

Designed for use in NoGo inspection applications and for setting or checking set micrometers, verniers, and other precision measuring devices requiring a 22.49 mm reference diameter.

Installation Notes

Pin gages are handled and used by quality technicians and metrologists - no power tools or mechanical installation is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the steel surface. Always handle with clean cotton gloves or a lint-free cloth to avoid dimensional error from thermal expansion caused by hand heat. Store in the supplied case or a protected location to prevent surface damage that could compromise measurement accuracy.