Vermont Gage 112102380 Class Zz Plus Plug Gage 2.38mm

Product Description

The VERMONT GAGE 112102380 is a Class ZZ Plus plug gage machined from tool steel and designed for precise go-inspection of small-diameter bores and holes. It carries a 2.38 mm nominal diameter with a tolerance of 0.00508 mm, making it suitable for applications that demand tight dimensional verification. The working surface is finished to a 10 microfinish rating, reducing surface irregularities that could affect measurement accuracy. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting ASME B89.1 standards. Dimensional inspection technicians, machinists, and quality-control personnel are the primary users of this gage in production and metrology environments.

This plug gage is used in go-inspection routines to verify that bored, drilled, or reamed holes fall within acceptable dimensional limits. It is also suitable for setting and checking micrometers, verniers, and other measuring devices that require a calibrated reference. Typical applications include precision machining shops, toolrooms, and quality-assurance labs where small-bore dimensional conformance must be documented. The included NIST-traceable accuracy certificate supports traceability requirements in ISO and AS9100 quality systems.

Key Features

• 2.38 mm nominal diameter with 0.00508 mm tolerance for tight dimensional control
• Class ZZ Plus classification per ASME B89.1 standard
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface for accurate, repeatable contact measurement
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Compatible with go-inspection use as well as setting micrometers, verniers, and comparable measuring devices

Compatibility

Designed for go-inspection of small-diameter bores and for setting micrometers, verniers, and other measuring devices requiring a calibrated small-bore reference standard.

Installation Notes

This gage is handled and used by inspection technicians and machinists in controlled metrology environments. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Do not force the gage into a bore; apply only light, consistent hand pressure to avoid wear or deflection that could affect readings. Store in a protective case away from temperature extremes to maintain dimensional stability.