Vermont Gage 111181300 Class Zz Plus Plug Gage 0.813 in

Product Description

The VERMONT GAGE 111181300 is a Class ZZ Plus plug gage designed for precision bore and hole inspection in metrology and quality-control environments. Manufactured from tool steel, it features a nominal measurement diameter of 0.813 inches and holds a tolerance of 0.0002 inches, making it suitable for high-accuracy Go inspection work. The gage carries a 10 microfinish surface finish and ships with a Certificate of Accuracy backed by NIST traceability, meeting ASME B89.1 standards. Machinists, quality technicians, and metrologists use this type of gage to verify that bored or drilled features fall within specified dimensional limits.

This plug gage is used in Go inspection applications to confirm that a hole or bore is no smaller than its lower dimensional limit. It is equally suited for setting and calibrating micrometers, verniers, and other measuring devices to a known reference diameter. Typical deployment is in machine shops, production inspection stations, and tool rooms where dimensional verification of 0.813-inch features is required. The overall length of 2 inches keeps the gage manageable for bench and in-fixture use alike.

Key Features

• Nominal measurement diameter of 0.813 inches with a 0.0002-inch tolerance for precise Go inspection
• 10 microfinish surface finish for consistent, repeatable contact with the workpiece
• Tool steel construction for durability and wear resistance in production environments
• Includes Certificate of Accuracy with NIST traceability for documented calibration chain
• Conforms to ASME B89.1 dimensional gage standards
• Overall length of 2 inches for easy handling at the bench or inspection fixture

Compatibility

Designed as a Go-type reference gage for inspecting holes and bores with a nominal diameter of 0.813 inches, and for setting micrometers, verniers, and other measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists familiar with precision metrology practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surfaces. Never force the gage into a feature; controlled, gentle insertion is required to avoid damaging the gage or the workpiece. Store in the provided case or a protected location away from temperature extremes to maintain dimensional stability.