Vermont Gage 112408230 Class Zz Minus Plug Pin Gage 8.23mm

Product Description

The VERMONT GAGE 112408230 is a Class ZZ Minus plug pin gage designed for NoGo inspection of bores and holes measuring 8.23 mm in diameter. Manufactured from steel with a 10 microfinish surface coating, this gage delivers a tolerance of 0.00508 mm, making it appropriate for precision dimensional verification in machine shops, quality control environments, and tool rooms. At 2 inches in overall length, it is compact enough for handheld use during routine inspection workflows. Each unit ships with a Certificate of Accuracy backed by NIST traceability, confirming that measurements meet documented standards.

This plug gage is used to verify that a hole or bore does not exceed its maximum allowable size, which is the standard NoGo inspection function. It is also suited for setting and calibrating micrometers, verniers, and other measuring devices that require a reference standard of known diameter. Typical users include quality technicians, machinists, and metrology professionals working in production or incoming inspection settings. The Class ZZ designation identifies it as a working-class gage appropriate for general inspection use rather than laboratory-grade master gage applications.

Key Features

• Class ZZ Minus tolerance classification for NoGo hole inspection
• 8.23 mm measurement diameter with 0.00508 mm tolerance
• Steel construction with 10 microfinish surface coating for accurate contact
• 2 inches overall length for easy handheld operation
• Includes NIST-traceable Certificate of Accuracy for documentation and calibration records
• Compatible with use as a reference standard for setting micrometers, verniers, and similar measuring devices

Compatibility

Designed for NoGo bore inspection at 8.23 mm and for use with micrometers, verniers, and other measuring devices requiring a precision diameter reference standard.

Installation Notes

Plug pin gages are handled and used by quality control technicians and machinists and do not require mechanical installation. Store the gage in its protective case when not in use to prevent damage to the finished surface. Clean the gage and the part being checked before use to avoid measurement error caused by debris or oils. Do not force the gage into a bore, as this can damage both the gage and the workpiece.