Vermont Gage 112112240 Class Zz Plus Plug Gage 12.24mm

Product Description

The VERMONT GAGE 112112240 is a Class ZZ Plus plug gage designed for precise go inspection of machined bores and internal diameters. Built from tool steel and finished to a 10 microfinish surface quality, this gage delivers reliable dimensional verification at a nominal diameter of 12.24 mm with a tolerance of 0.00508 mm. With an overall length of 2.0000 inches and a package weight of 0.11 pounds, it is a compact, single-piece instrument suited for bench inspection and in-process quality checks. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documented quality management systems.

This plug gage is intended for go inspection applications where verifying that a bore meets minimum size requirements is critical. Typical uses include checking machined holes, reamed bores, and threaded or plain cylindrical features in production and maintenance environments. It is compatible with use alongside set micrometers, verniers, and other calibrated measuring devices as specified in ASME B89.1. Quality control technicians, toolmakers, machinists, and metrology lab personnel are the primary installers and users of this instrument in both light manufacturing and precision machining shops.

Key Features

• Class ZZ Plus tolerance grade — 0.00508 mm tolerance for accurate go inspection
• 12.24 mm nominal diameter for consistent bore verification
• Tool steel construction for durability and wear resistance under repeated use
• 10 microfinish surface for minimal contact variation during measurement
• Includes Certificate of Accuracy with NIST traceability for quality system documentation
• Conforms to ASME B89.1 dimensional standards

Compatibility

Designed for go inspection use with set micrometers, verniers, and other calibrated measuring devices per ASME B89.1. Suitable as an OEM-style plug gage for applications requiring a 12.24 mm nominal bore check in production or inspection environments.

Installation Notes

This instrument is handled and used by quality control technicians and machinists — no power source or utility shutoff is required. Clean the gage and the bore being checked before use to prevent measurement error from debris or residual cutting fluid. Do not force the gage into a bore; if resistance is encountered, the feature is undersize and requires further machining. Store the gage in its protective case when not in use to preserve the precision ground surface and maintain calibration integrity.