Vermont Gage 112304970 Class Zz Plus Plug Gage 4.97mm

Product Description

The VERMONT GAGE 112304970 is a Class ZZ Plus cylindrical plug gage designed for precision dimensional inspection of bored holes, machined bores, and other features requiring close-tolerance measurement. With a nominal diameter of 4.97 mm and a tolerance of 0.00508 mm, this gage delivers the accuracy demanded in quality-control environments. Manufactured from tool steel with a 10 microfinish surface coating, it provides consistent, repeatable results when used in go-type inspection workflows. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting the documentation requirements of most ISO and ASME quality systems.

This plug gage is suited for use in manufacturing, metrology labs, and machine shops where hole diameter verification is part of a standard inspection routine. It is appropriate for calibrating or verifying the setup of micrometers, verniers, and other measuring devices, as well as for go inspection of production parts. Its compact overall length of 2.0 inches makes it easy to handle for bench inspection and in-process checks on a variety of workpiece geometries.

Key Features

• Class ZZ Plus tolerance grade with 0.00508 mm tolerance for precise go inspection
• 4.97 mm nominal diameter, tool steel construction with 10 microfinish surface coating
• Meets ASME B89.1 dimensional standard for plug gages
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Suitable for setting and verifying micrometers, verniers, and other measuring devices
• Compact 2.0-inch overall length for easy bench and in-process use

Compatibility

Designed for go inspection of bored holes and machined features, and for use as a setting standard with micrometers, verniers, and comparable precision measuring devices where a 4.97 mm reference diameter is required.

Installation Notes

This gage is handled and used by quality technicians and metrology personnel rather than installed in a system. Clean the gage and the workpiece bore thoroughly before use to prevent measurement errors caused by contamination or debris. Store the gage in its protective case when not in use to preserve the surface finish and dimensional integrity. Follow ASME B89.1 guidelines for proper gage handling, calibration intervals, and environmental conditions during measurement.