Vermont Gage 112119600 Class Zz Plus Plug Gage 19.6mm

Product Description

The VERMONT GAGE 112119600 is a Class ZZ Plus cylindrical plug gage manufactured from tool steel for dimensional go inspection of bored holes and machined features. Designed to verify that a hole or bore meets its minimum acceptable size, this gage measures 19.6 mm in diameter with a tolerance of 0.00508 mm and a surface finish of 10 microinch. The overall length is 2.0000 inches, making it suitable for bench and floor inspection work. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting the documentation requirements of quality-managed manufacturing and machine shops. Licensed machinists, tool-and-die makers, and quality technicians are the primary users.

This plug gage is used in production inspection environments where bore size conformance must be verified before assembly. Typical applications include go inspection of drilled, reamed, or bored holes in metal components. It is also suited for calibrating and setting micrometers, verniers, and other comparative measuring instruments. The Class ZZ Plus designation indicates a tighter tolerance tier above standard Class ZZ, making this gage appropriate for applications demanding higher precision. Both light manufacturing shops and precision machining facilities will find this gage applicable to standard quality control workflows compliant with ASME B89.1.

Key Features

• 19.6 mm diameter with 0.00508 mm tolerance for precise go inspection
• Class ZZ Plus classification meets ASME B89.1 dimensional standards
• Tool steel construction for durability and wear resistance in production use
• 10 microinch surface finish ensures accurate contact measurement
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• Suitable for setting micrometers, verniers, and other comparative measuring devices

Compatibility

Designed for go inspection of machined bores and holes at 19.6 mm nominal diameter. Also suitable for use as a setting standard with micrometers, verniers, and other measuring devices per the manufacturer application data.

Installation Notes

Handle plug gages with clean, dry hands or lint-free gloves to prevent contamination of the lapped surface. Clean the bore and gage contact surfaces before use to ensure accurate readings and prevent premature wear. Store the gage in its protective case when not in use and avoid dropping or stacking with other hard tooling. Periodic recalibration against traceable standards is recommended to maintain measurement integrity over time.