Vermont Gage 112103080 Class Zz Plus Plug Gage 3.08 Mm

Product Description

The VERMONT GAGE 112103080 is a Class ZZ Plus plug gage ground and lapped to a 3.08 mm diameter with a tolerance of 0.00508 mm and a 10 microfinish surface finish. Made from tool steel, this gage is used to verify bore and hole dimensions in production and inspection environments. It ships with a Certificate of Accuracy that carries NIST traceability, making it suitable for use in calibrated measurement programs. Metrology technicians, machinists, and quality control inspectors rely on this type of gage for fast, repeatable go-inspection checks on precision-machined parts.

This plug gage is designed for go inspection applications, confirming that a machined hole or bore meets its minimum acceptable size. It is also used to set and verify micrometers, verniers, and other precision measuring devices. Typical use is on the shop floor or in a metrology lab where tight dimensional tolerances must be confirmed before parts advance through production. The 3.08 mm diameter targets small-bore inspection work common in precision manufacturing, medical device production, and aerospace component machining.

Key Features

• Class ZZ Plus tolerance grade: 0.00508 mm, suitable for production go inspection
• 10 microfinish surface finish for consistent, low-wear gage contact
• Tool steel construction for durability in repeated shop-floor use
• Includes Certificate of Accuracy with NIST traceability
• Meets ASME B89.1 standard for plain plug gages
• Overall length of 2.0000 inches for comfortable single-hand use

Compatibility

Designed for go inspection use with micrometers, verniers, and other precision measuring devices where a 3.08 mm reference diameter is required per ASME B89.1.

Installation Notes

Plug gages are handled and used by metrology technicians and quality control personnel rather than installed in a mechanical system. Store the gage in its case when not in use to prevent nicks and corrosion. Clean the gage surface with a lint-free cloth before each use and apply a light coat of gage oil when storing for extended periods. Never force a plug gage into a bore; if resistance is felt, stop and verify the bore diameter with an alternate measurement method.