Vermont Gage 112301230 Class Zz Plus Plug Gage 1.23 Mm

Product Description

The VERMONT GAGE 112301230 is a Class ZZ Plus plug gage designed for precision dimensional inspection of small bores and holes. Manufactured from tool steel with a 10 microfinish surface, it measures a nominal diameter of 1.23 mm with a tolerance of 0.00508 mm. The overall length is 2.0000 inches. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for use in quality control environments where documentation is required. This gage is used by machinists, quality technicians, and metrologists performing go inspection tasks on production parts.

This plug gage is appropriate for go inspection applications in manufacturing and metrology environments. It is used alongside set micrometers, verniers, and other calibrated measuring devices to verify that bored or drilled features fall within specified dimensional tolerances. The 1.23 mm diameter makes it suited for small-feature inspection found in precision machining, tool and die, and tight-tolerance fabrication work. It conforms to ASME B89.1 standards, which establishes the performance and accuracy requirements for plain plug gages used in industrial inspection.

Key Features

• Class ZZ Plus tolerance grade: 0.00508 mm, meeting ASME B89.1 requirements
• 1.23 mm nominal diameter for small-bore go inspection
• 10 microfinish surface for consistent, repeatable gage contact
• Tool steel construction for durability and wear resistance
• Includes Certificate of Accuracy with NIST traceability
• Overall length of 2.0000 inches for standard handle compatibility

Compatibility

Designed for use with standard plug gage handles and suitable for go inspection tasks with set micrometers, verniers, and other precision measuring devices per application data provided by the manufacturer.

Installation Notes

Plug gages are handled and used by quality technicians and machinists — no installation in the traditional sense applies. Store the gage in its protective case when not in use to prevent surface damage and contamination. Clean the gage pin and the feature being inspected before use to ensure accurate readings. Do not force the gage into an undersized bore, as this can damage the gage surface and compromise measurement integrity.