Vermont Gage 111164800 Class Zz Plus Plug Gage 0.648 in

Product Description

The VERMONT GAGE 111164800 is a Class ZZ Plus cylindrical plug gage manufactured from tool steel for precise go-type bore inspection. It measures a nominal diameter of 0.648 inches with a tolerance of 0.0002 inches, making it suitable for high-accuracy dimensional verification in production and quality control environments. The gage features a 10 microinch surface finish to support consistent, repeatable contact with the workpiece. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming conformance to ASME B89.1 standards. Machinists, quality technicians, and metrology professionals use this gage to verify bore size acceptability on machined components.

This plug gage is intended for go inspection of bored, drilled, or reamed holes where a 0.648-inch nominal diameter must be confirmed to tight tolerance. It is also suited for use in calibrating or setting instruments such as micrometers, verniers, and other measuring devices. The 2.0-inch overall length provides a manageable handle grip for bench-top and floor-level inspection tasks. Typical applications include job-shop machining operations, incoming inspection stations, and tool-and-die calibration setups.

Key Features

• Class ZZ Plus tolerance grade: 0.0002 inches, suitable for precision go inspection
• 10 microinch surface finish for repeatable, accurate contact
• Tool steel construction for hardness and wear resistance
• Conforms to ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability
• Useful for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of workpiece bores at 0.648 inches nominal diameter and for use as a setting standard with micrometers, verniers, and other handheld measuring devices.

Installation Notes

This gage is handled by quality technicians and metrology personnel; no power-down or lockout procedure is required for typical bench use. Keep the gage surface clean and lightly oiled when not in use to prevent corrosion and maintain surface finish integrity. Do not force the gage into an undersized bore, as this can damage the gage surface and affect accuracy. Store in a protective case away from temperature extremes to preserve dimensional stability.