Vermont Gage 112321850 Class Zz Plus Plug Gage 21.85mm

Product Description

The VERMONT GAGE 112321850 is a Class ZZ Plus plug gage designed for go inspection of machined bores and holes with a nominal diameter of 21.85 mm. Manufactured from tool steel with a 10 micro-inch surface finish, this gage delivers a tolerance of 0.00508 mm, meeting ASME B89.1 standards for dimensional gaging. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for documented quality-control programs. Metrology technicians, tool-and-die shops, and precision machining operations use this gage to verify that bored features fall within acceptable limits before parts advance to the next production stage.

This plug gage is used in applications requiring go-type inspection of round bores in both production and receiving inspection environments. It is suited for use alongside set micrometers, verniers, and other calibrated measuring devices. The 2.0-inch overall length provides a comfortable, stable grip for manual gage application. Facilities operating under ISO quality systems or similar quality frameworks will find the included NIST-traceable certificate directly supports calibration records and traceability requirements.

Key Features

• Class ZZ Plus tolerance of 0.00508 mm for precise go inspection
• Meets ASME B89.1 dimensional gaging standards
• Includes Certificate of Accuracy with NIST traceability
• Tool steel construction with 10 micro-inch surface finish for durability and wear resistance
• 2.0-inch overall length for stable manual handling
• Compatible with set micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of machined bores and holes at a nominal diameter of 21.85 mm. Suitable for use with set micrometers, verniers, and other calibrated measuring devices as stated by the manufacturer.

Installation Notes

Plug gages are handled and applied by metrology technicians or quality-control personnel, not installed in the traditional sense. Clean the gage and the bore thoroughly before use to prevent debris from affecting the measurement or damaging the gage surface. Store the gage in its protective case when not in use to prevent corrosion and surface wear. Periodic recalibration against traceable standards is recommended to maintain measurement integrity over time.