Vermont Gage 111172900 Class Zz Plus Plug Gage 0.729 in

Product Description

The VERMONT GAGE 111172900 is a Class ZZ Plus plug gage machined from tool steel for precision go inspection of bored holes, machined bores, and similar features. It measures 0.729 inches in diameter with a tolerance of 0.0002 inches and a 10 microinch surface finish, meeting ASME B89.1 dimensional standards. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for quality-controlled environments where traceability documentation is required. Overall length is 2.0 inches. This gage is used by machinists, quality technicians, and inspection personnel working in production or tool-room settings.

Class ZZ Plus plug gages are applied in go inspection workflows to verify that a bored or machined feature falls within acceptable dimensional limits. The 111172900 is also suited for setting and calibrating micrometers, vernier calipers, and other measuring devices requiring a known reference diameter. Typical applications include incoming inspection, in-process quality checks, and final inspection on machined components where tight tolerances are held. The 10 microinch finish reduces wear on the gage and the part being checked during repeated use.

Key Features

• 0.729 inch measurement diameter with 0.0002 inch tolerance per ASME B89.1
• 10 microinch surface finish for reduced wear and consistent contact
• Tool steel construction for durability in production inspection environments
• Includes Certificate of Accuracy with NIST traceability for documented quality systems
• 2.0 inch overall length for comfortable single-hand use
• Suitable as a reference standard for setting micrometers, verniers, and similar instruments

Compatibility

Designed for go inspection of features at 0.729 inches nominal diameter and for use as a reference standard when setting micrometers, verniers, and other measuring devices requiring a traceable reference at that diameter.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power tools or utilities need to be shut down prior to use. Store the gage in its case away from abrasive surfaces and temperature extremes to preserve dimensional integrity. Clean the gage and the part bore before inspection to prevent debris from affecting readings or accelerating gage wear. Do not force the gage into an undersized bore, as this will damage both the gage and the part.