Vermont Gage 912101200 Class Zz Plus Plug Gage 1.2 Mm

Product Description

The VERMONT GAGE 912101200 is a Class ZZ Plus plug gage designed for precision dimensional inspection of small-diameter bores and holes. Manufactured from tool steel with a black oxide finish, this gage measures a nominal diameter of 1.2 mm with a tolerance of 0.005 mm, making it suitable for high-accuracy go inspection work. The overall length is 2.0 inches. It ships with a Certificate of Accuracy traceable to NIST standards and conforms to ASME B89.1. Machinists, quality technicians, and calibration professionals use this gage to verify bore diameters in production and inspection environments.

This plug gage is intended for go inspection applications involving small-diameter bores in precision machined components. It is also used to set and verify micrometers, verniers, and other measuring devices that require a known reference standard. Typical use environments include machine shops, inspection departments, and calibration labs working to tight dimensional tolerances on metal parts. The Class ZZ Plus designation identifies the tolerance grade as appropriate for production-level inspection rather than master or reference-grade work.

Key Features

• Nominal diameter of 1.2 mm with 0.005 mm tolerance for precise go inspection
• Tool steel construction with black oxide finish for wear resistance and corrosion protection
• Conforms to ASME B89.1 dimensional standards
• Includes Certificate of Accuracy with NIST traceability
• Suitable for setting micrometers, verniers, and other measuring instruments
• Overall length of 2.0 inches for easy handling in standard gage holders

Compatibility

Designed for go inspection of bores and holes and for use as a setting standard with micrometers, verniers, and other precision measuring devices requiring a traceable reference at 1.2 mm nominal diameter.

Installation Notes

Plug gages of this type are handled and used by quality technicians and metrologists in inspection environments. Keep the gage clean and lightly oiled when not in use to prevent corrosion. Do not drop or impact the gage, as this can alter the ground surface and invalidate the tolerance. Recalibrate or re-verify against a traceable standard after any suspected impact or contamination event.