Vermont Gage 111331650 Class Zz Plus Plug Gage 0.3165 in

Product Description

The VERMONT GAGE 111331650 is a Class ZZ Plus plug gage machined from tool steel and used to verify bore diameters to a tolerance of 0.0002 inches. This gage measures a nominal diameter of 0.3165 inches and is finished to a 10 microfinish surface quality. Class ZZ Plus gages are manufactured to ASME B89.1 standards and include a Certificate of Accuracy with NIST traceability, making them suitable for documented inspection programs. The overall length is 2.0 inches. Calibration labs, machine shops, and quality control departments rely on this type of gage to confirm workpiece acceptance during production and receiving inspection.

This plug gage is intended for go inspection of holes and bores where dimensional conformance must be verified against a defined tolerance. Typical applications include checking bored, drilled, or reamed holes in machined parts. It is also used to calibrate and set micrometers, verniers, and other comparative measuring devices. The 0.3165 inch diameter makes it appropriate for small-bore inspection work common in precision manufacturing, toolroom environments, and quality assurance workflows across metalworking and mechanical assembly operations.

Key Features

• Class ZZ Plus tolerance class per ASME B89.1 for accurate go inspection
• 0.3165 inch measurement diameter with 0.0002 inch tolerance
• 10 microfinish surface for consistent, repeatable contact
• Constructed from tool steel for durability and wear resistance
• Includes Certificate of Accuracy with NIST traceability for traceable documentation
• Overall length of 2.0 inches for easy handheld use

Compatibility

Designed for go inspection of 0.3165 inch diameter bores and for setting micrometers, verniers, and other measuring devices requiring a precision reference at this diameter.

Installation Notes

Plug gages should be handled by calibration technicians or quality control personnel familiar with precision measurement practices. Clean the gage and workpiece bore before use to prevent debris from affecting measurement results. 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 gage or the workpiece.