Vermont Gage 112201980 Class Zz Minus Plug Pin Gage

Product Description

The VERMONT GAGE 112201980 is a Class ZZ Minus plug pin gage designed for precision dimensional inspection in machine shops, manufacturing facilities, and metrology labs. Ground from steel stock and finished to a 10 microfinish surface, this pin gage measures 1.98 mm in diameter with a minus tolerance of 0.00508 mm. The overall length is 2 inches. It ships with a Certificate of Accuracy that includes NIST traceability, confirming the gage meets Class ZZ minus standards. Machinists, quality technicians, and tool-and-die professionals use this gage as a go/no-go reference or as a setting standard for micrometers, verniers, and other precision measuring devices.

This pin gage is suited for NoGo inspection applications where a controlled minus tolerance is required to verify that a bore or hole does not exceed its maximum allowable dimension. It is also used to set and verify micrometers, vernier calipers, and similar bench-top measuring instruments. The 1.98 mm diameter falls within the small-bore range commonly encountered in precision components, molds, dies, and medical or aerospace part inspection. Single-piece packaging makes it straightforward to add to an existing pin gage set or to replace a worn or damaged individual pin.

Key Features

• Class ZZ Minus tolerance of 0.00508 mm for NoGo inspection use
• 1.98 mm diameter ground to a 10 microfinish surface for repeatable contact measurement
• Steel construction for durability in production and inspection environments
• Overall length of 2 inches for standard hand-held use
• Includes Certificate of Accuracy with NIST traceability
• Suitable for setting micrometers, verniers, and other precision measuring devices

Compatibility

Designed as an OEM-style replacement or supplement for Class ZZ pin gage sets requiring a 1.98 mm minus-tolerance member. Suitable for use with standard plug gage handles and holders that accept small-diameter pin gages.

Installation Notes

Pin gages should be handled with clean, dry gloves or a lint-free cloth to prevent corrosion from skin oils. Before use, verify the gage surface is free of burrs or debris that could affect measurement accuracy. Store in a protective case away from temperature extremes to maintain dimensional stability. Calibration intervals should follow the facility quality management plan and applicable metrology standards.