Vermont Gage 111139400 Class Zz Plus Plug Gage 0.394 in

Product Description

The VERMONT GAGE 111139400 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bores, holes, and internal features. Manufactured from tool steel with a 10 microfinish surface, this gage measures a nominal diameter of 0.394 inches with a tolerance of 0.0002 inches, meeting the accuracy demands of production inspection and quality control environments. It is used by metrology technicians, machinists, and quality inspectors to verify that manufactured holes fall within specified dimensional limits. Each unit ships with a Certificate of Accuracy with NIST traceability, confirming calibration to national standards.

This plug gage is suited for go inspection applications and is also used to calibrate and verify the accuracy of set micrometers, verniers, and other measuring devices. It is appropriate for use in machine shops, manufacturing facilities, and inspection labs requiring traceable, repeatable measurements. The 2.0-inch overall length provides a comfortable grip for hand inspection tasks. Conformance to ASME B89.1 makes it suitable for environments where documented standards compliance is required.

Key Features

• 0.394-inch nominal diameter with 0.0002-inch Class ZZ Plus tolerance
• 10 microfinish surface for accurate, repeatable contact measurements
• Tool steel construction for durability and wear resistance
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards
• 2.0-inch overall length for ergonomic hand use

Compatibility

Designed for go inspection of bores and holes at 0.394 inches nominal diameter, and for use as a reference standard with set micrometers, verniers, and other measuring devices requiring a traceable reference.

Installation Notes

Plug gages should be handled by qualified metrology personnel or trained inspection technicians. Always clean the gage and the workpiece bore before use to prevent damage to the gage surface or false readings. Store the gage in its protective case when not in use to preserve the surface finish and dimensional integrity. Do not force the gage into an undersized bore, as this can damage the 10 microfinish surface and compromise calibration.