Vermont Gage 112102940 Class Zz Plus Plug Gage 2.94 Mm

Product Description

The VERMONT GAGE 112102940 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection of small bores and holes. At 2.94 mm in diameter, it carries a tolerance of 0.00508 mm and a 10 microfinish surface finish, delivering the precision required for verifying hole size acceptance in production and quality-control environments. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming the gage meets ASME B89.1 standards. Calibration technicians, machinists, and quality inspectors are the primary users of this type of gage.

This plug gage is suited for go inspection applications in manufacturing, machine shops, and metrology labs. It is used to verify that a bore or hole falls within acceptable dimensional limits before assembly or further processing. Beyond go inspection, it is also appropriate for setting micrometers, verniers, and other measuring devices that require a traceable dimensional reference. The 2.94 mm diameter targets small-bore work common in precision machined components.

Key Features

• Class ZZ Plus tolerance: 0.00508 mm for high-accuracy go inspection
• 10 microfinish surface finish for consistent gage-to-bore contact
• Tool steel construction for wear resistance in repeated use
• NIST-traceable Certificate of Accuracy included with each unit
• Conforms to ASME B89.1 dimensional gage standards
• Suitable for setting micrometers, verniers, and other precision measuring instruments

Compatibility

Designed for go inspection of 2.94 mm diameter bores and as a setting reference for micrometers, verniers, and other measuring devices requiring a traceable dimensional standard.

Installation Notes

Plug gages are handled and used by qualified machinists or metrology technicians following standard gage-handling practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Never force the gage into a bore; apply only light, consistent hand pressure to avoid damaging the gage or the workpiece. Store in the protective case or sleeve provided to maintain the calibrated finish.