Vermont Gage 111127500 Class Zz Plus Plug Gage 0.275 in

Product Description

The VERMONT GAGE 111127500 is a Class ZZ Plus plug gage designed for precise go-inspection measurement of bored, drilled, and reamed holes. Manufactured from tool steel with a 10 microfinish surface, this plug gage delivers a diameter of 0.275 inches with a tight tolerance of 0.0002 inches. It measures 2.0 inches in overall length. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting ASME B89.1 standards. Machinists, quality control technicians, and toolroom personnel use this gage to verify hole dimensions on production parts and during setup of micrometers, verniers, and other measuring devices.

This plug gage is suited for use in both production floor and quality lab environments where go-inspection of small-diameter holes is required. It is appropriate for verifying bores in machined components across light manufacturing, aerospace, automotive, and general metalworking applications. The 0.275-inch diameter range covers common drilled and reamed hole sizes in these settings. It is also used as a reference standard when calibrating or setting micrometers, vernier calipers, and similar measuring instruments.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy go-inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface for smooth, repeatable gage entry
• 2.0-inch overall length for easy handling and clearance in typical fixtures
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 standards

Compatibility

Designed for go inspection of 0.275-inch diameter holes and for setting micrometers, verniers, and other measuring devices per ASME B89.1 requirements.

Installation Notes

Plug gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion and measurement error. Before use, verify the gage and workpiece are at the same ambient temperature to avoid thermal expansion errors. Store the gage in its case when not in use and apply a light coat of rust-preventive oil for long-term storage. Periodic re-calibration against a certified reference standard is recommended to maintain measurement integrity.