Vermont Gage 111102500 Class Zz Plus Plug Gage 0.025 in

Product Description

The VERMONT GAGE 111102500 is a Class ZZ Plus plug gage machined from tool steel and designed for precision dimensional inspection of small-diameter bores and holes. It measures a nominal diameter of 0.025 inches with a tolerance of 0.0002 inches and features a 10 microfinish surface on the gage member. Each unit ships with a Certificate of Accuracy with NIST traceability, making it suitable for calibration-controlled environments and quality assurance workflows. This gage is intended for use by machinists, metrology technicians, and quality control professionals who require reliable go-inspection tooling.

This plug gage is applied in go inspection procedures to verify that a drilled, reamed, or otherwise finished hole meets its minimum size requirement. It is also used to set micrometers, verniers, and other measuring devices to a known reference diameter. The 0.025-inch diameter makes it appropriate for precision work in small-bore applications common in aerospace, medical device, and general machining environments. The 2.0-inch overall length provides adequate handling clearance during bench and in-process inspection tasks.

Key Features

• Class ZZ Plus tolerance grade with 0.0002-inch dimensional tolerance for precise go inspection
• 10 microfinish surface on gage member minimizes wear and ensures accurate contact
• Tool steel construction provides hardness and durability for repeated use
• Includes Certificate of Accuracy with NIST traceability for calibration documentation requirements
• Conforms to ASME B89.1 standard for plain plug gages
• 2.0-inch overall length for practical handling during inspection

Compatibility

Designed for go inspection of bores and holes at 0.025 inches nominal diameter, and for use as a reference standard when setting micrometers, verniers, and other measuring devices.

Installation Notes

Plug gages are handled and used by metrology technicians and quality control personnel, not installed in a mechanical system. Store the gage in its protective case when not in use to prevent damage to the precision ground surface. Clean the gage member with a lint-free cloth before each use and inspect for burrs or wear that could affect measurement accuracy. Do not force the gage into an undersized hole, as this will damage the gage member and invalidate calibration.