Vermont Gage 112103200 Class Zz Plus Plug Gage 3.2 Mm

Product Description

The VERMONT GAGE 112103200 is a Class ZZ Plus plug gage designed for precise bore and hole inspection in production and quality-control environments. It measures 3.2 mm in diameter with a tolerance of 0.005 mm, making it suitable for high-accuracy go inspection work. The gage is machined from tool steel and features a 10 microfinish surface, which supports consistent, repeatable contact with the workpiece. At 2.0 inches overall length, it fits standard handle configurations used in most gage setups. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting the documentation requirements common in ISO-certified and aerospace-adjacent shops. Machinists, quality technicians, and metrology professionals are the primary users.

This plug gage is used for go inspection of bores, holes, and apertures where a 3.2 mm nominal diameter applies. It is also suitable for setting micrometers, verniers, and other comparative measuring devices that require a precision reference. Typical applications include incoming inspection, in-process quality checks, and first-article inspection on precision-machined components. The Class ZZ Plus classification indicates a tighter tolerance than standard Class ZZ, making it appropriate for closer-tolerance work where standard plug gages may not provide sufficient accuracy.

Key Features

• 3.2 mm diameter with 0.005 mm tolerance for high-accuracy go inspection
• Tool steel construction for durability and wear resistance in repeated use
• 10 microfinish surface ensures consistent, repeatable gage contact
• 2.0 inches overall length fits standard gage handles and setups
• Includes Certificate of Accuracy with NIST traceability for documentation requirements
• Meets ASME B89.1 standards for plain gages

Compatibility

Designed for use as a go plug gage reference in standard gage handle systems and as a setting reference for micrometers, verniers, and other measuring devices requiring a 3.2 mm precision standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power tools or utilities need to be de-energized prior to use. Store the gage in its protective case when not in use and avoid contact with abrasive surfaces that could alter the microfinish. Clean contact surfaces with a lint-free cloth before each use to prevent measurement error from contamination. Calibration intervals should follow your facility quality management system and applicable metrology standards.