Vermont Gage 112303930 Class Zz Plus Plug Gage 3.93mm

Product Description

The VERMONT GAGE 112303930 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection work. It checks bore and hole diameters against a known standard, confirming whether a feature falls within acceptable tolerance. The gage measures 3.93 mm in diameter with a tolerance of 0.005 mm and carries a 10 microfinish surface finish, delivering the precision required for reliable pass/fail inspection decisions. Overall length is 2.0000 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting quality documentation requirements on the shop floor or in a calibration environment.

This plug gage is suited for use in manufacturing inspection, toolroom verification, and production quality control settings. It supports go inspection workflows and serves as a reference standard when setting micrometers, verniers, and other measuring devices. Technicians and quality inspectors working to ASME B89.1 dimensional standards will find this gage appropriate for small-diameter bore verification in both light manufacturing and precision machining environments.

Key Features

• Class ZZ Plus tolerance classification for go inspection applications
• 3.93 mm diameter with 0.005 mm tolerance for precise bore verification
• 10 microfinish surface for accurate, repeatable contact measurement
• Tool steel construction for durability in production and toolroom use
• Meets ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability for documentation compliance

Compatibility

Designed for go inspection of 3.93 mm diameter bores and holes; also used to set and verify micrometers, verniers, and other precision measuring devices where a certified dimensional reference is required.

Installation Notes

Plug gages are handled and applied by quality technicians, metrologists, and precision machinists. Clean the gage and the bore thoroughly before use to prevent debris from affecting measurement accuracy. Never force the gage into a bore; apply only light, consistent hand pressure to avoid damage to the gage or the workpiece. Store the gage in its case when not in use to protect the finished surface and maintain calibration integrity.