Vermont Gage 112102880 Class Zz Plus Plug Gage 2.88mm

Product Description

The VERMONT GAGE 112102880 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection of small bores and holes. It is designed to verify that a feature falls within an acceptable size range, making it a standard tool in quality control and precision measurement workflows. The gage measures 2.88 mm in diameter and holds a tolerance of 0.00508 mm, with a 10 microfinish surface condition that ensures accurate, repeatable contact with the workpiece. Each unit ships with a Certificate of Accuracy traceable to NIST. Machinists, quality technicians, and metrology professionals use this type of gage in production and inspection environments.

This plug gage is suited for go inspection applications in precision manufacturing, toolroom, and quality lab settings. It is used to check bored holes, reamed passages, and other small-diameter features in both production-run inspection and setup verification. Typical applications include setting micrometers, verniers, and other measuring devices to a known reference diameter. The 2.88 mm size makes it appropriate for small-bore work common in aerospace, medical device, and precision mechanical component manufacturing.

Key Features

• Class ZZ Plus tolerance class for go inspection accuracy
• 2.88 mm nominal diameter with 0.00508 mm tolerance
• 10 microfinish surface for consistent, low-wear contact
• Tool steel construction for durability in production environments
• Conforms to ASME B89.1 standards
• Includes Certificate of Accuracy with NIST traceability

Compatibility

Designed for use as a go inspection gage and as a reference standard for setting micrometers, verniers, and other measuring devices requiring a 2.88 mm diameter reference.

Installation Notes

Plug gages should be handled and stored by quality or metrology personnel following standard gage care procedures. Clean the gage and the workpiece bore before use to prevent debris from affecting the reading. Do not force the gage into a bore; proper go inspection relies on the gage passing through under its own weight or with light hand pressure. Store in a protective case away from temperature extremes to maintain dimensional stability.