Vermont Gage 112108700 Class Zz Plus Plug Gage 8.7 Mm

Product Description

The VERMONT GAGE 112108700 is a Class ZZ Plus plug gage machined from tool steel for precision bore inspection in metrology and quality-control environments. With an 8.7 mm nominal diameter and a tolerance of 0.005 mm, this plug gage is built to ASME B89.1 standards and delivers a 10 microfinish surface on the gage pin. Overall length is 2.0 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documented quality systems and traceability requirements. Calibration labs, machine shops, and manufacturing QC departments rely on Class ZZ Plus gages for reliable pass/fail bore verification.

This plug gage is used for go inspection of precision bored holes, bushings, and similar features at the 8.7 mm nominal size. It is also suitable for setting micrometers, verniers, and other comparative measuring devices requiring a known reference. Typical applications include incoming inspection, in-process verification on machined components, and calibration setups in tool rooms and production environments where ASME B89.1 traceability is required.

Key Features

• Class ZZ Plus tolerance of 0.005 mm for high-accuracy bore inspection
• 10 microfinish surface on the gage pin for consistent, repeatable measurements
• Tool steel construction for durability and wear resistance
• Compliant with ASME B89.1 gage standards
• Includes Certificate of Accuracy with NIST traceability for documentation requirements
• Suitable for go inspection and as a reference standard for setting measuring instruments

Compatibility

Designed for go inspection of 8.7 mm diameter bores and as a reference standard for setting micrometers, verniers, and other measuring devices requiring a calibrated plug reference.

Installation Notes

Handle plug gages with clean, dry hands or lint-free gloves to prevent corrosion and surface contamination. Store in the provided case or a dry environment away from other tooling to protect the lapped surface finish. When using as a setting reference for measuring instruments, allow the gage and workpiece to reach thermal equilibrium at the same ambient temperature before measurement. Inspection and calibration work should be performed by qualified metrology or quality-control personnel in accordance with applicable shop standards.