Vermont Gage 112103920 Class Zz Plus Plug Gage 3.92 Mm

Product Description

The VERMONT GAGE 112103920 is a Class ZZ Plus plug gage machined from tool steel and ground to a 3.92 mm diameter. It carries a tolerance of 0.005 mm and a 10 microfinish surface finish. This gage is used to verify bore and hole dimensions on machined parts, castings, and assemblies. It ships with a Certificate of Accuracy that includes NIST traceability, meeting the documentation requirements of ASME B89.1. Machinists, quality technicians, and metrology lab personnel are the primary users. The compact overall length of 2.0000 inches makes it easy to handle in close-tolerance inspection work.

This plug gage is suited for go inspection of small-diameter bores in precision machining, fabrication, and quality control environments. It is appropriate for both shop-floor use and controlled metrology settings where documented traceability is required. The 10 microfinish reduces wear on the gage and the workpiece during repeated insertions. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a traceable dimensional reference.

Key Features

• Class ZZ Plus tolerance: 0.005 mm for high-precision go inspection
• 10 microfinish surface finish minimizes wear and improves gage life
• Tool steel construction for durability in production and lab environments
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards
• Compact 2.0000-inch overall length for easy handling in tight spaces

Compatibility

Designed for go inspection of 3.92 mm diameter bores and as a reference standard for setting micrometers, verniers, and other precision measuring devices.

Installation Notes

Plug gages should be handled by qualified metrology or quality personnel following shop calibration procedures. Clean the gage and bore before use to prevent debris from affecting readings or damaging the finish. Store the gage in its case when not in use to protect the ground surface. Do not force the gage into an undersized bore, as this can damage both the gage and the workpiece.