Vermont Gage 112301570 Class Zz Plus Plug Gage 1.57 Mm

Product Description

The VERMONT GAGE 112301570 is a Class ZZ Plus plug gage designed for precise dimensional inspection of small bored holes and machined features. Manufactured from tool steel, this gage measures a nominal diameter of 1.57 mm with a tolerance of 0.00508 mm, making it suitable for go inspection applications where close-tolerance verification is required. The working surface carries a 10 microfinish, which supports consistent, repeatable contact with the workpiece bore. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming calibration compliance to ASME B89.1 standards. Metrology technicians, tool and die makers, and quality control personnel are the primary users of this gage in production and inspection environments.

This plug gage is used in go inspection setups to verify that a bored, drilled, or reamed hole meets its minimum acceptable size before a part proceeds to the next manufacturing stage. It is also suited for setting and verifying micrometers, verniers, and other comparative measuring devices. Applications span precision machining shops, assembly lines, and quality labs handling small-diameter features in metal and engineered plastic components. At 1.57 mm diameter, this gage addresses the fine-tolerance end of the range where optical or air-gage alternatives may be cost-prohibitive.

Key Features

• Class ZZ Plus tolerance grade per ASME B89.1 for go inspection use
• 1.57 mm nominal diameter with 0.00508 mm tolerance
• 10 microfinish working surface for consistent bore contact
• Tool steel construction for wear resistance in production inspection
• Includes Certificate of Accuracy with NIST-traceable calibration
• Compatible with go inspection setups and use as a reference for micrometers and verniers

Compatibility

Designed for go inspection applications and for setting micrometers, verniers, and other measuring devices requiring a 1.57 mm reference standard.

Installation Notes

Plug gages should be handled and stored by trained metrology or quality control personnel following shop calibration procedures. Clean the gage and the workpiece bore before use to prevent debris from affecting the measurement result or damaging the gage surface. Do not force the gage into a bore; apply only light, consistent hand pressure consistent with go-gage practice. Store in a protective case away from magnetic fields, corrosive environments, and temperature extremes to preserve dimensional stability.