Vermont Gage 111312750 Class Zz Plus Plug Gage 0.1275 in

Product Description

The VERMONT GAGE 111312750 is a Class ZZ Plus plug gage used to verify bore and hole diameters to a high degree of accuracy. Machined from tool steel and finished to a 10 microfinish surface, this gage measures a nominal diameter of 0.1275 inches with a tolerance of 0.0002 inches. It is designed for go inspection applications and serves as a reference standard when calibrating or checking set micrometers, verniers, and other precision measuring devices. Each unit ships with a Certificate of Accuracy that includes NIST traceability, meeting ASME B89.1 standards. Machinists, quality technicians, and metrology professionals rely on this type of gage for in-process and final inspection work.

This plug gage is suited for inspection departments, machine shops, and precision manufacturing environments where tight dimensional tolerances must be verified consistently. It is commonly used as a go gage to confirm that a drilled, reamed, or bored hole falls within the minimum acceptable diameter. The 2.0-inch overall length provides comfortable handling during repeated inspections. Its tool steel construction stands up to regular use in production and quality lab settings alike.

Key Features

• 0.1275-inch nominal diameter for precise bore and hole inspection
• 0.0002-inch tolerance for high-accuracy go inspection use
• 10 microfinish surface for consistent, low-wear contact with measured surfaces
• Tool steel construction for durability in production environments
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards

Compatibility

Designed as an OEM-style Class ZZ Plus go plug gage for use with set micrometers, verniers, and other precision measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists — no installation in the traditional sense applies. Store the gage in its protective case when not in use to prevent nicks or corrosion that could affect accuracy. Clean contact surfaces with a lint-free cloth before each use. Never force the gage into a bore; apply only light, consistent hand pressure to avoid wear or measurement error.