Vermont Gage 112303050 Class Zz Plus Plug Gage 3.05mm

Product Description

The VERMONT GAGE 112303050 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bored holes and machined features. Manufactured from tool steel with a 10 microfinish surface coating, this gage checks whether a hole meets its minimum acceptable size for go inspection applications. It measures a nominal diameter of 3.05 mm with a tolerance of 0.005 mm, providing the accuracy required for quality control workflows in machine shops, tool rooms, and production environments. The overall length is 2.0 inches. Each unit ships with a Certificate of Accuracy traceable to NIST standards, satisfying documentation requirements for ISO and AS9100-registered facilities.

This plug gage is suited for use in go inspection routines where a technician or quality inspector needs to verify that a drilled, reamed, or bored hole falls within a specified tolerance band. It is also appropriate for setting and verifying micrometers, verniers, and other precision measuring devices. Typical users include machinists, metrology technicians, and quality engineers working in general manufacturing, aerospace, and precision machining environments where ASME B89.1 compliance is required.

Key Features

• 3.05 mm nominal diameter with 0.005 mm tolerance for tight-tolerance hole inspection
• Class ZZ Plus classification per ASME B89.1 standard
• Tool steel construction for durability and dimensional stability under repeated use
• 10 microfinish surface coating minimizes wear and ensures accurate contact measurement
• Includes Certificate of Accuracy with NIST traceability for quality documentation compliance
• Compact 2.0-inch overall length suits tight-access inspection scenarios

Compatibility

Designed for use with go inspection setups and for setting micrometers, verniers, and other measuring devices requiring a certified reference diameter of 3.05 mm.

Installation Notes

Plug gages are handled and stored by metrology technicians or quality inspectors, not installed in a mechanical system. Clean the gage and the hole or measuring device contact surface before each use to prevent debris from affecting readings. Store the gage in its protective case when not in use to avoid surface damage. Do not force the gage into a hole that resists entry, as this can damage both the gage and the workpiece.