Vermont Gage 111127900 Class Zz Plus Plug Gage 0.279 in

Product Description

The VERMONT GAGE 111127900 is a Class ZZ Plus plug gage designed for go-type inspection of hole diameters at a nominal 0.279 inches. Made from tool steel with a 10 microfinish surface, this gage provides a tolerance of 0.0002 inches, meeting ASME B89.1 standards. Each unit ships with a Certificate of Accuracy with NIST traceability, making it suitable for documented quality control environments. At 2.0 inches overall length, it is sized for convenient one-handed use in production or inspection settings. Licensed metrologists, quality technicians, and skilled machinists are the primary users of this type of precision tooling.

This plug gage is applied in go-type dimensional inspection of machined holes, bores, and drilled features. It is also used as a reference standard for setting micrometers, verniers, and other measuring devices. Typical environments include machine shops, manufacturing inspection departments, and tool rooms where ASME B89.1 compliance is required. The 0.279-inch diameter and Class ZZ Plus tolerance class target applications demanding tighter conformance than standard Class ZZ gages.

Key Features

• Nominal diameter of 0.279 inches with a tolerance of 0.0002 inches
• Class ZZ Plus tolerance class per ASME B89.1
• 10 microfinish surface for accurate, low-wear contact
• Tool steel construction for hardness and dimensional stability
• Includes Certificate of Accuracy with NIST traceability
• Suitable for go inspection and for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for go-type inspection use with holes, bores, and measuring instruments requiring a 0.279-inch reference diameter, in applications governed by ASME B89.1.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source or mechanical installation is required. Keep the gage clean and lightly oiled when stored to prevent corrosion on the tool steel surface. Do not force the gage into an undersized hole, as this can damage both the gage and the workpiece. Store in the provided case or a protective holder away from other metal tooling to preserve the 10 microfinish surface.