Vermont Gage 111120300 Class Zz Plus Plug Gage 0.203 in

Product Description

The VERMONT GAGE 111120300 is a Class ZZ Plus plug gage used to inspect hole diameters with high precision. Machined from tool steel, it measures a nominal diameter of 0.203 inches with a tolerance of 0.0002 inches. The gage face carries a 10 microfinish surface finish, which reduces wear and delivers consistent contact with the workpiece. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for documented quality-control programs. Machinists, quality technicians, and tool-room personnel use this gage as part of go-inspection routines and when setting or verifying micrometers, verniers, and other dimensional measuring instruments.

This plug gage is intended for go inspection of 0.203-inch diameter bores in production and inspection environments. It is well suited to both job-shop and production floor use where hole-acceptance decisions must be made quickly and reliably. The overall length of 2.0 inches provides a practical handle reach for standard bore-depth work. Per the ASME B89.1 standard, Class ZZ Plus gages are commonly used in applications where economic service life and measurement traceability are both priorities.

Key Features

• 0.203-inch nominal diameter with 0.0002-inch tolerance for tight-tolerance bore inspection
• 10 microfinish surface on the gage member reduces friction and wear during repeated use
• Tool steel construction provides hardness and dimensional stability under shop conditions
• Includes Certificate of Accuracy with NIST traceability for documented QC programs
• Conforms to ASME B89.1 standards for dimensional gaging
• 2.0-inch overall length suits standard bore-depth inspection tasks

Compatibility

Designed as a go-inspection plug gage for 0.203-inch diameter bores. Also used to set and verify micrometers, verniers, and other dimensional measuring devices requiring a precision reference at this diameter.

Installation Notes

Plug gages are handled and applied by machinists, quality technicians, and metrologists — no power tools or utilities require shutdown before use. Store the gage in its protective case when not in service to prevent nicks and corrosion. Apply a light film of instrument oil before storage. Never force the gage into an undersized bore, as this will damage the gage member and invalidate the accuracy certificate.