Vermont Gage 112321730 Class Zz Plus Plug Gage 21.73mm

Product Description

The VERMONT GAGE 112321730 is a Class ZZ Plus cylindrical plug gage designed to verify bore diameters to a 21.73 mm nominal size with a tolerance of 0.00508 mm. Manufactured from tool steel with a 10 micro finish, this gage delivers the dimensional accuracy and surface consistency required for Go inspection work. It is used to confirm that a hole or bore meets minimum acceptable size before a part advances through production or final inspection. A Certificate of Accuracy with NIST Traceability is included, making it suitable for calibrated measurement environments and audit-ready quality systems. Overall length is 2.0000 inches.

This plug gage is used in precision inspection applications where bore acceptance must be confirmed quickly and reliably. Typical use cases include Go inspection on machined components, setting micrometers, calibrating verniers, and verifying other measuring devices against a known reference. It fits into quality control workflows in manufacturing, machine shops, and metrology labs. The included NIST-traceable Certificate of Accuracy supports documentation requirements in ISO, AS9100, and similar quality management frameworks. The compact size and standard handle configuration make it easy to integrate into existing gage sets.

Key Features

• Class ZZ Plus tolerance grade with 0.00508 mm tolerance for high-precision Go inspection
• Tool steel construction with 10 micro surface finish for consistent gage contact and wear resistance
• NIST-traceable Certificate of Accuracy included for calibration documentation and audit compliance
• Meets ASME B89.1 standards for dimensional gaging
• 21.73 mm nominal diameter with 2.0000 inch overall length

Compatibility

Designed for Go inspection of bores at 21.73 mm nominal diameter and for use as a reference standard when setting micrometers, verniers, and other measuring devices requiring a traceable dimensional reference.

Installation Notes

Plug gages should be handled by qualified inspection or metrology personnel. Clean the gage and the bore thoroughly before use to prevent debris from affecting measurement results or causing surface damage. Store the gage in its protective case when not in use to preserve the surface finish and dimensional integrity. Do not force the gage into an undersized bore, as this can damage both the gage and the workpiece.