Vermont Gage 112321770 Class Zz Plus Plug Gage 21.77mm

Product Description

The VERMONT GAGE 112321770 is a Class ZZ Plus plug gage designed for go inspection of bored, drilled, or reamed holes with a nominal diameter of 21.77 mm. Manufactured from tool steel with a 10 micro-inch finish coating, this gage delivers a tolerance of 0.005 mm, meeting the requirements of ASME B89.1. It ships with a Certificate of Accuracy that carries NIST traceability, making it suitable for calibrated inspection environments. Machinists, quality technicians, and tool room personnel use this gage to verify that a hole falls within its specified minimum acceptable limit before a workpiece advances to the next stage of production.

This plug gage is used in go inspection applications alongside set micrometers, verniers, and other precision measuring devices. It is appropriate for inspection of machined components in job shop, production floor, and metrology lab settings. The gage is suited for both incoming inspection and in-process quality checks where hole diameter conformance must be documented. Its compact overall length of 2.0000 inches makes it easy to handle and store within a standard gage set.

Key Features

• Class ZZ Plus tolerance rating per ASME B89.1 for go inspection service
• 21.77 mm nominal diameter with 0.005 mm tolerance
• Tool steel construction with 10 micro-inch surface finish coating
• Includes Certificate of Accuracy with NIST traceability
• Overall length of 2.0000 inches for compact handling

Compatibility

Designed for use in go inspection of holes at 21.77 mm nominal diameter; compatible with set micrometers, verniers, and other precision measuring devices per ASME B89.1 applications.

Installation Notes

Plug gages are handled and used by quality technicians and machinists in inspection settings. Clean the gage and the workpiece bore thoroughly before use to prevent debris from affecting the reading. Store the gage in its protective case when not in use to avoid surface damage that could compromise tolerance accuracy. Follow your facility calibration schedule and ASME B89.1 guidance for periodic verification of the gage itself.