Vermont Gage 111174400 Class Zz Plus Plug Gage 0.744 in

Product Description

The VERMONT GAGE 111174400 is a Class ZZ Plus plug gage machined from tool steel and designed to perform go-type inspection of bored, reamed, or drilled holes. At 0.744 inches in diameter, this gage provides a tolerance of 0.0002 inches and a 10 microinch surface finish, giving inspection technicians and machinists a reliable reference for confirming that a workpiece bore meets minimum acceptable size. Built to ASME B89.1 standards, the 111174400 ships with a Certificate of Accuracy that carries NIST traceability, satisfying documentation requirements in quality-controlled manufacturing and shop-floor inspection environments.

This plug gage is suited for go inspection applications across general machining, tool-and-die, and precision manufacturing settings. It is also used to set and verify micrometers, verniers, and other measuring devices where a certified reference standard is required. At 2.0 inches in overall length, the gage is compact enough for bench use or integration into a standard gage stand. Typical users include quality control inspectors, machinists, and metrology technicians working to ASME or equivalent dimensional tolerancing standards.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy go inspection
• 10 microinch surface finish for consistent, repeatable contact measurement
• Tool steel construction for wear resistance and long service life
• Conforms to ASME B89.1 dimensional standards
• Includes Certificate of Accuracy with NIST traceability for documentation and audit compliance
• Suitable for setting micrometers, verniers, and other calibrated measuring instruments

Compatibility

Designed for go inspection of holes and bores at 0.744 inches nominal diameter, and for use as a certified reference when setting or verifying micrometers, verniers, and similar measuring devices.

Installation Notes

Plug gages are handled and used by quality control technicians and machinists; no power source or fasteners are required. Keep the gage clean and lightly oiled when not in use to prevent corrosion of the tool steel. Do not force the gage through a bore — go gages should pass under their own weight or with light hand pressure only. Store in a protective case away from temperature extremes to maintain dimensional stability and protect the NIST-traceable certification.