Vermont Gage 112107940 Class Zz Plus Plug Gage 7.94mm

Product Description

The VERMONT GAGE 112107940 is a Class ZZ Plus cylindrical plug gage used to verify bore diameters in go inspection applications. Manufactured from tool steel with a 10 microfinish surface, this gage checks a 7.94 mm diameter bore with a tolerance of 0.005 mm (0.00508 mm actual). The overall length is 2.0000 inches, keeping it compact and easy to handle during bench or in-process inspection. Each unit ships with a Certificate of Accuracy that includes NIST traceability, meeting the documentation requirements common in ISO- and AS9100-registered facilities. Machinists, quality technicians, and tool-room personnel use this gage as a fast, reliable attribute check for drilled, reamed, or bored holes.

This plug gage is suited for go inspection of 7.94 mm diameter holes in precision machined components across metalworking, aerospace, automotive, and general manufacturing environments. It is also used to set and verify micrometers, verniers, and other measuring devices where a traceable reference standard of known diameter is required. Its compact form makes it practical for both bench-top quality control stations and direct use at the machine.

Key Features

• Class ZZ Plus tolerance rating with 0.005 mm tolerance for reliable attribute inspection
• 7.94 mm nominal diameter for go inspection of precision bores
• 10 microfinish surface finish reduces wear and ensures consistent gage contact
• Tool steel construction for durability in production and tool-room environments
• Conforms to ASME B89.1 standard
• Includes Certificate of Accuracy with NIST traceability for documentation compliance

Compatibility

Designed for go inspection of 7.94 mm diameter bores and for use as a reference standard with micrometers, verniers, and other precision measuring devices requiring a traceable cylindrical reference.

Installation Notes

Plug gages are handled and used by quality technicians and tool-room machinists — no installation in the traditional sense is required. Store the gage in its protective case when not in use to prevent surface damage and corrosion. Clean the gage and bore surfaces before each use to ensure accurate readings and to avoid premature wear. Do not force the gage into a bore; if resistance is felt, the bore is undersized and should be re-inspected with a calibrated instrument.