Vermont Gage 112218500 Class Zz Minus Plug Pin Gage 18.50mm

Product Description

The VERMONT GAGE 112218500 is a Class ZZ Minus plug pin gage designed for precise dimensional inspection of 18.50 mm diameter features. Built from steel with a 10 micro-inch coating finish, this pin gage delivers a tolerance of 0.00508 mm, meeting the requirements of Class ZZ minus standards. It is used to verify that a hole or bore does not exceed its maximum allowable size, making it a NoGo inspection tool. Each unit ships with a Certificate of Accuracy that includes NIST traceability, giving calibration-conscious shops the documentation they need. Machinists, quality technicians, and tool room professionals rely on this type of gage for fast, repeatable go/no-go checks during production and incoming inspection.

This plug pin gage is suited for use in manufacturing environments where hole diameter verification is part of standard quality control workflow. It is compatible with use alongside set micrometers, verniers, and other precision measuring devices for comparative or reference measurement tasks. The 2-inch overall length provides a comfortable, stable grip during single-handed insertion into bores and drilled features on workpieces ranging from small machined parts to production assemblies.

Key Features

• Class ZZ Minus tolerance classification - 0.00508 mm tolerance for NoGo inspection applications
• 18.50 mm measurement diameter with 2-inch overall length
• Steel construction with 10 micro-inch coating for wear and corrosion resistance
• Includes Certificate of Accuracy with NIST traceability for calibration documentation
• Compatible with set micrometers, verniers, and other reference measuring instruments

Compatibility

Designed for NoGo inspection use and compatible with set micrometers, verniers, and other precision measuring devices as stated by the manufacturer.

Installation Notes

Pin gages are handled and used by quality technicians and machinists - no power source or utility shutoff is required. Keep the gage surface clean and lightly oiled when not in use to prevent corrosion. Insert the pin gage by hand with controlled, light pressure; never force a pin gage into a bore, as this can damage both the gage and the workpiece. Store in a protective case away from abrasive materials to maintain calibration integrity.