Vermont Gage 111150200 Class Zz Plus Plug Gage 0.502 in

Product Description

The VERMONT GAGE 111150200 is a Class ZZ Plus plug gage machined from tool steel for precision go inspection work. It measures a nominal diameter of 0.502 inches and holds a tolerance of 0.0002 inches, meeting the exacting demands of ASME B89.1 standards. The working surface carries a 10 microinch finish, ensuring consistent, repeatable contact with the bore being checked. Each unit ships with a Certificate of Accuracy traceable to NIST. This gage is used by machinists, quality control technicians, and metrology professionals who need a reliable, traceable reference for verifying hole and bore dimensions in production or inspection settings.

The 111150200 is suited for go inspection of bores, holes, and features at the 0.502-inch nominal size. It is a practical tool for calibrating and verifying set micrometers, verniers, and other measuring devices that require a known, certified reference diameter. The overall length of 2.0 inches makes it compatible with standard gage handle setups. Applications span general machining, quality assurance labs, tool rooms, and any production environment where hole-size conformance must be documented and verified against a traceable standard.

Key Features

• Class ZZ Plus tolerance grade — 0.0002 inch tolerance for high-accuracy go inspection
• 10 microinch surface finish for consistent, repeatable gage contact
• Constructed from tool steel for durability and wear resistance in production use
• Includes Certificate of Accuracy with NIST traceability for documented quality compliance
• Meets ASME B89.1 standards for dimensional gaging
• Overall length of 2.0 inches fits standard plug gage handles

Compatibility

Designed for use with standard plug gage handles and suitable as a reference for setting micrometers, verniers, and other measuring devices requiring a certified 0.502-inch diameter reference.

Installation Notes

Plug gages are handled and used by quality technicians and machinists — no power source or mechanical installation is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Allow the gage and workpiece to stabilize at the same ambient temperature before use, as thermal expansion can affect readings at tight tolerances. Store in the original protective case or a dedicated gage block storage solution to avoid surface damage.