Vermont Gage 111197400 Class Zz Plus Plug Gage 0.974 in

Product Description

The VERMONT GAGE 111197400 is a Class ZZ Plus plug gage designed for precise go inspection of machined holes and bores. Manufactured from tool steel with a 10 microinch surface finish, this plug gage measures a nominal diameter of 0.974 inches with a tolerance of 0.0002 inches. It conforms to ASME B89.1 standards and ships with a Certificate of Accuracy with NIST traceability. Machinists, quality technicians, and tool room professionals use this gage to verify that drilled, reamed, or bored features meet minimum size requirements before parts advance through the production process.

This plug gage is suited for go inspection applications in manufacturing, machining, and quality control environments. It is also used to calibrate and verify the accuracy of set micrometers, verniers, and other measuring devices. The 0.974-inch diameter and 2.0-inch overall length make it appropriate for benchtop inspection stations as well as in-process checks on the shop floor. Typical users include CNC machinists, QC inspectors, and metrology lab technicians working to close-tolerance specifications.

Key Features

• Class ZZ Plus tolerance grade at 0.0002 inches for high-accuracy go inspection
• 10 microinch surface finish for consistent, repeatable gage contact
• Tool steel construction provides durability and wear resistance in production environments
• Conforms to ASME B89.1 dimensional and tolerance standards
• Includes Certificate of Accuracy with NIST traceability for documented quality compliance
• Suitable for setting and verifying set micrometers, verniers, and other measuring instruments

Compatibility

Designed as a go-inspection plug gage for machined holes and bores at 0.974 inches nominal diameter. Also functions as a reference standard for setting micrometers, verniers, and comparable measuring devices requiring a traceable, close-tolerance reference.

Installation Notes

Plug gages should be handled and stored by qualified inspection or metrology personnel following ASME B89.1 handling guidelines. Clean the gage and the workpiece bore before use to prevent debris from causing false readings or gage wear. Do not force the plug gage into an undersized feature. Store in a protective case away from temperature extremes to maintain dimensional stability and preserve the NIST-traceable calibration.