Vermont Gage 111168500 Class Zz Plus Plug Gage 0.685 in

Product Description

The VERMONT GAGE 111168500 is a Class ZZ Plus plug gage with a 0.685-inch measurement diameter, designed for go inspection of precision bored holes, machined features, and internal dimensions. Manufactured from tool steel with a 10 microinch surface finish, this gage delivers a dimensional tolerance of 0.0002 inches, providing reliable verification in quality control and inspection environments. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for use in documented inspection processes. It is installed and used by machinists, quality technicians, toolmakers, and calibration personnel.

This plug gage is used in shop-floor and laboratory inspection settings where dimensional verification of hole sizes is required. Common applications include go inspection of drilled, bored, or reamed holes, as well as calibration and verification of set micrometers, verniers, and other precision measuring devices. The 0.685-inch diameter and Class ZZ Plus tolerance class make it appropriate for standard precision work in manufacturing, tooling, and metrology environments. Conforms to ASME B89.1 standards for gage dimensional accuracy.

Key Features

• Class ZZ Plus tolerance class with 0.0002-inch dimensional tolerance for precision go inspection
• 0.685-inch measurement diameter in tool steel construction for durability and wear resistance
• 10 microinch surface finish for consistent, repeatable contact with the gauged surface
• Includes Certificate of Accuracy with NIST traceability for documented quality systems
• Conforms to ASME B89.1 dimensional standards
• Suitable for setting and verifying micrometers, verniers, and other measuring instruments

Compatibility

Designed for go inspection of 0.685-inch nominal diameter features and for use as a reference setting standard with micrometers, verniers, and comparable precision measuring devices per ASME B89.1.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no permanent installation is required. Clean the gage and the workpiece bore thoroughly before use to avoid false readings caused by debris or coolant residue. Store the gage in its case when not in use to protect the precision ground surface from corrosion and damage. Do not force the gage into an undersized bore, as this can damage both the gage and the workpiece.