Vermont Gage 112108500 Class Zz Plus Plug Gage 8.5 Mm

Product Description

The VERMONT GAGE 112108500 is a Class ZZ Plus cylindrical plug gage designed to verify bore diameters to tight tolerances in production and inspection environments. It measures 8.5 mm in diameter with a tolerance of 0.00508 mm, making it suitable for Go inspection applications where precise dimensional verification is required. The gage body is machined from tool steel and finished to a 10 microfinish surface quality. Each unit ships with a Certificate of Accuracy that carries NIST traceability, meeting ASME B89.1 standards. Metrologists, quality technicians, and machinists use this type of gage to confirm whether a bored or reamed hole falls within the accepted dimensional range.

This plug gage is used in Go inspection routines on the shop floor and in metrology labs. It is suited for checking bores on machined components in manufacturing, maintenance, and repair operations. The 8.5 mm diameter fits common bore sizes found in general metalworking, tooling, and mechanical assembly applications. It can also serve as a setting standard for micrometers, verniers, and other measuring devices that require a traceable reference. Overall length is 2.0 inches, keeping the gage compact and easy to handle at the inspection station.

Key Features

• Class ZZ Plus tolerance grade with 0.00508 mm tolerance for precise Go inspection
• Tool steel construction for durability and wear resistance in repetitive inspection use
• 10 microfinish surface for accurate, repeatable contact with bore surfaces
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards
• Compact 2.0-inch overall length for easy handling

Compatibility

Designed as an OEM-style Go plug gage for verifying 8.5 mm diameter bores and for use as a setting reference with micrometers, verniers, and other calibrated measuring devices.

Installation Notes

Plug gages of this type are handled by quality technicians, metrologists, and machinists performing dimensional inspection. Store the gage in its protective case when not in use to prevent surface damage. Clean the gage and the bore being checked before use to avoid false readings from contamination or burrs. Do not force the gage into an undersized bore, as this can damage the gage surface and compromise calibration integrity.