Vermont Gage 111303950 Class Zz Plus Plug Gage 0.0395 in

Product Description

The VERMONT GAGE 111303950 is a Class ZZ Plus plug gage designed for precise go inspection of small-diameter bores and holes. Measuring 0.0395 inches in diameter, this plug gage is manufactured from tool steel and ground to a 10 microfinish surface quality. It conforms to ASME B89.1 standards and carries a tolerance of 0.0002 inches, making it suitable for quality control applications where tight dimensional verification is required. Each unit ships with a Certificate of Accuracy backed by NIST traceability. Dimensional inspection professionals, toolroom technicians, and quality engineers use this gage to verify hole sizes in production and inspection environments.

This plug gage is used in go inspection workflows to confirm that a drilled, reamed, or machined hole meets its lower-limit dimensional requirement. It is also applied when setting micrometers, verniers, and other measuring devices that require a traceable reference standard. Typical applications include toolroom calibration, incoming inspection, in-process quality checks, and final dimensional verification on precision-machined components. The small diameter makes it particularly relevant for micro-bore and small-hole inspection in both light manufacturing and precision machining operations.

Key Features

• Diameter of 0.0395 inches for precise small-bore go inspection
• Tolerance of 0.0002 inches per ASME B89.1 standard
• 10 microfinish surface for consistent, repeatable contact
• Tool steel construction for durability and dimensional stability
• Includes Certificate of Accuracy with NIST traceability
• Compatible with use as a reference standard for micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of bores and holes at 0.0395 inches diameter, and for setting and verifying micrometers, verniers, and other dimensional measuring devices requiring a traceable reference at this size.

Installation Notes

Plug gages of this type are handled and used by quality technicians, toolroom personnel, and calibration professionals. Clean the gage and the workpiece bore thoroughly before use to prevent debris from causing false readings or surface damage. Store the gage in its case when not in use to protect the precision-ground surface. Do not force the gage into a bore; apply only light, controlled hand pressure to avoid deflection or wear on the tool steel tip.