Vermont Gage 111181600 Class Zz Plus Plug Gage 0.816 in

Product Description

The VERMONT GAGE 111181600 is a Class ZZ Plus plug gage designed for precise go inspection of bored, reamed, or drilled holes at a 0.816-inch nominal diameter. Built from tool steel and finished to a 10 microinch surface finish, it delivers a diameter tolerance of 0.0002 inches, meeting the dimensional verification requirements of ASME B89.1. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for use in calibrated inspection environments. Licensed metrologists, quality technicians, and tool-room machinists use this gage to verify hole size conformance on production and inspection floors.

This plug gage is suited for go inspection applications where tight diameter control is required. It is also used to set and verify micrometers, verniers, and other precision measuring devices. The 0.816-inch diameter and 2.0-inch overall length make it compatible with standard gage-handle systems used in both light manufacturing and precision machining environments. Its Class ZZ Plus classification indicates it meets or exceeds the dimensional accuracy requirements for working gages used in routine production inspection.

Key Features

• 0.816-inch measurement diameter with 0.0002-inch tolerance per ASME B89.1
• 10 microinch surface finish for consistent, repeatable contact
• Tool steel construction for durability in production environments
• Includes Certificate of Accuracy with NIST traceability
• 2.0-inch overall length compatible with standard gage handle setups
• Class ZZ Plus classification meets working gage requirements for go inspection

Compatibility

Designed for use in go inspection of holes at 0.816 inches nominal diameter, and for setting micrometers, verniers, and other precision measuring devices. Fits standard gage handles sized for the 0.816-inch diameter range.

Installation Notes

Plug gages should be handled and stored by metrology or quality personnel following the measurement equipment procedures outlined in your facility quality management system. Clean the gage and the workpiece bore before use to prevent false readings or surface damage. Do not force the gage through a hole; go gages should pass under the weight of the gage alone or with minimal hand pressure. Store in a protective case away from cutting fluids and abrasive contaminants to preserve the calibrated surface finish.