Vermont Gage 112112800 Class Zz Plus Plug Gage 12.8 Mm

Product Description

The VERMONT GAGE 112112800 is a Class ZZ Plus plug gage designed for precise go inspection of bored holes and machined features. It measures 12.8 mm in diameter with a tolerance of 0.005 mm, making it suited for high-accuracy dimensional verification in manufacturing and quality control environments. The gage is manufactured from tool steel and carries a 10 microfinish surface coating for consistent, reliable contact. It includes a Certificate of Accuracy with NIST traceability, confirming calibration to recognized national standards. Machinists, quality technicians, and metrology professionals use this tool to verify hole diameters against go-limit specifications in production and inspection settings.

This plug gage is used in applications requiring go inspection of 12.8 mm diameter features, including verification with set micrometers, verniers, and other precision measuring devices. It conforms to ASME B89.1 standards and is appropriate for both shop-floor and laboratory inspection environments. The 2.0 inch overall length provides a practical handle for single-handed operation during routine part inspection. It is well suited to quality control workflows in machine shops, fabrication facilities, and manufacturing lines where tight-tolerance hole verification is required.

Key Features

• 12.8 mm diameter with 0.005 mm tolerance for high-precision go inspection
• Tool steel construction for durability and wear resistance in repeated use
• 10 microfinish surface coating ensures consistent gage-to-part contact
• Includes Certificate of Accuracy with NIST traceability per ASME B89.1
• 2.0 inch overall length for practical, single-handed inspection use
• Suitable for use with set micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of 12.8 mm diameter holes and bored features. Compatible with set micrometers, verniers, and other precision measuring devices as stated by the manufacturer.

Installation Notes

Plug gages are handled and used by quality technicians and machinists during inspection procedures. Clean the gage and the workpiece bore thoroughly before use to prevent measurement error from debris or burrs. Do not force the gage into an undersized bore, as this can damage the gage surface and compromise accuracy. Store the gage in its protective case when not in use to preserve the microfinish and prevent corrosion.