Vermont Gage 111179100 Class Zz Plus Plug Gage 0.791 in

Product Description

The VERMONT GAGE 111179100 is a Class ZZ Plus plug gage used to verify bore and hole dimensions in precision machining and inspection environments. Manufactured from tool steel, it measures a nominal diameter of 0.791 inches with a tolerance of 0.0002 inches and a 10 microinch surface finish. The 2.0-inch overall length suits standard gage handle configurations. This gage ships with a Certificate of Accuracy bearing NIST traceability, making it suitable for use in quality-controlled environments where documentation is required. Machinists, quality technicians, and tool room personnel are the primary users of this type of precision instrument.

This plug gage is designed for go inspection applications, confirming that a bore or hole does not fall below the minimum acceptable size. It is also suitable for setting micrometers, verniers, and other measuring devices that require a certified reference. Typical use is in job shop, production floor, and metrology lab environments where dimensional verification of bored or reamed holes is part of the standard inspection process. The Class ZZ Plus designation indicates a tighter tolerance class than standard ZZ, appropriate for higher-accuracy inspection requirements.

Key Features

• Nominal measurement diameter of 0.791 inches for precise bore inspection
• Tolerance of 0.0002 inches meeting Class ZZ Plus accuracy requirements
• 10 microinch surface finish for consistent gage contact and wear resistance
• Tool steel construction for durability in production and lab environments
• Includes Certificate of Accuracy with NIST traceability for documentation requirements
• Conforms to ASME B89.1 standards

Compatibility

Designed for use in go inspection applications and as a reference standard for setting micrometers, verniers, and other measuring devices requiring a certified plug gage reference.

Installation Notes

Plug gages are handled and used by quality technicians and machinists and require no permanent installation. Keep the gage clean and lightly oiled when not in use to prevent corrosion on tool steel surfaces. Do not force the gage into a bore; controlled hand pressure is sufficient for proper inspection technique. Store in the provided case or a protected location away from surfaces that could cause damage to the precision-ground diameter.