Vermont Gage 112308850 Class Zz Plus Plug Gage 8.85 Mm

Product Description

The VERMONT GAGE 112308850 is a Class ZZ Plus cylindrical plug gage machined from tool steel and ground to a 10 microfinish surface finish. It measures 8.85 mm in diameter with a tolerance of 0.00508 mm, making it suitable for precision go inspection of bored holes, drilled features, and machined bores where tight dimensional control is required. The overall length is 2.0000 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming the gage meets ASME B89.1 standards. Licensed metrologists, quality technicians, and machinists use this gage as part of incoming inspection, in-process checks, and final acceptance routines.

This plug gage is intended for go inspection applications in manufacturing, job shop, and quality lab environments. It is also compatible with setting micrometers, verniers, and other calibrated measuring devices that require a precision reference. The Class ZZ Plus classification indicates a tighter tolerance band than standard Class ZZ, making it appropriate for higher-accuracy inspection requirements in both production and tool-room settings.

Key Features

• 8.85 mm diameter with 0.00508 mm tolerance for high-precision go inspection
• Tool steel construction for hardness and wear resistance
• 10 microfinish surface finish reduces measurement error from surface irregularities
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 gage standards
• Compatible with setting micrometers, verniers, and other calibrated measuring devices

Compatibility

Suitable for go inspection of features at 8.85 mm nominal diameter. Also used to set and verify micrometers, verniers, and other measuring devices requiring a precision reference plug.

Installation Notes

Plug gages are handled and used by quality technicians and machinists in inspection environments. Clean the gage and the workpiece bore before each use to prevent debris from affecting readings or damaging the gage surface. Do not force the gage into an undersized bore. Store in a protective case away from moisture and temperature extremes to preserve calibration integrity.