Vermont Gage 111142300 Class Zz Plus Plug Gage 0.423 in

Product Description

The VERMONT GAGE 111142300 is a Class ZZ Plus plug gage used to verify bore and hole diameters to a tight dimensional tolerance. Manufactured from tool steel, this plug gage holds a tolerance of 0.0002 inches and features a 10 microfinish surface. Total overall length is 2.0 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming it meets ASME B89.1 standards. Machinists, quality technicians, and metrologists rely on plug gages like this to perform fast, repeatable go inspection checks during production and incoming inspection workflows.

This gage is designed for go inspection applications on holes and bores measuring 0.423 inches in diameter. It is also suited for setting and verifying micrometers, verniers, and other handheld measuring devices in the shop or on the inspection bench. The Class ZZ Plus classification indicates a tighter manufacturing tolerance than standard Class ZZ, making it appropriate for applications where dimensional accuracy is critical. It fits naturally into both production-floor inspection stations and metrology lab environments across manufacturing, tooling, and machining operations.

Key Features

• Class ZZ Plus tolerance grade: 0.0002 inches for precise go inspection
• Tool steel construction for hardness and wear resistance
• 10 microfinish surface for accurate, repeatable contact
• Overall length of 2.0 inches for easy hand-held use
• Includes Certificate of Accuracy with NIST traceability
• Meets ASME B89.1 dimensional gage standards

Compatibility

Designed for go inspection of holes and bores at 0.423 inches diameter. Also used to set and verify micrometers, verniers, and other measuring devices requiring a reference standard at this diameter.

Installation Notes

Plug gages are handled and used by quality technicians and machinists — no installation in the traditional sense is required. Store the gage in its protective case when not in use to prevent nicks and surface damage that could affect accuracy. Clean the gage surface and the workpiece bore before use to remove chips, coolant, or debris. Do not force the gage into an undersized hole, as this can damage both the gage and the workpiece.