Vermont Gage 112101200 Class Zz Plus Plug Gage 1.2 Mm

Product Description

The VERMONT GAGE 112101200 is a Class ZZ Plus plug gage designed for precision hole diameter inspection in tool rooms, quality labs, and production floor environments. Built from tool steel with a 10 microfinish surface finish, this gage measures a nominal diameter of 1.2 mm with a tolerance of 0.00508 mm, making it suitable for tight-tolerance go inspection work. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting calibration documentation requirements. Licensed metrologists, quality technicians, and machinists use this type of gage to verify bore diameters against specification before parts advance through production.

This plug gage is used in applications where precise small-bore verification is required, including setting micrometers, verniers, and other measuring devices. It conforms to ASME B89.1 standards, making it appropriate for facilities that operate under documented quality management systems. Typical install scenarios include incoming inspection stations, CMM support benches, and fixture verification setups in machining and manufacturing environments. Its compact form factor suits high-density gage storage systems common in production tooling departments.

Key Features

• 1.2 mm nominal diameter with 0.00508 mm tolerance for precise go inspection
• 10 microfinish surface finish for consistent, repeatable contact with bore surfaces
• Tool steel construction provides hardness and wear resistance for repeated use
• Includes Certificate of Accuracy with NIST traceability for calibration compliance
• Conforms to ASME B89.1 dimensional standards
• Overall length of 2.0000 inches for easy hand-held use

Compatibility

Designed for use as a go inspection gage and for setting micrometers, verniers, and other precision measuring devices requiring a 1.2 mm reference diameter per ASME B89.1.

Installation Notes

Plug gages of this type are handled by quality technicians and metrology personnel — no power tools or mechanical installation is required. Store the gage in its protective case when not in use to prevent surface damage or contamination that could affect measurement accuracy. Clean the gage and the bore being checked before use to remove chips, coolant, or debris. Never force the gage through an undersized bore, as this can damage the gage surface and invalidate calibration.