Vermont Gage 112301390 Class Zz Plus Plug Gage 1.39mm

Product Description

The VERMONT GAGE 112301390 is a Class ZZ Plus plug gage used to verify hole diameters and inspect bore tolerances in precision machining and quality control environments. Manufactured from tool steel with a 10 microfinish surface coating, this gage measures a nominal diameter of 1.39 mm with a tolerance of 0.00508 mm, providing the tight dimensional accuracy required for Go inspection applications. It conforms to ASME B89.1 standards and ships with a Certificate of Accuracy traceable to NIST. Metrology technicians, machinists, and quality inspectors rely on plug gages of this class for reliable pass/fail verification at the workpiece level.

This gage is suited for Go inspection procedures on small-diameter bores in precision components. It is also compatible with setting and verifying micrometers, verniers, and other measuring devices requiring a traceable reference standard. Applications span aerospace, medical device, automotive, and general precision manufacturing environments where hole size conformance is critical. The 2.0-inch overall length provides a comfortable grip for bench or in-process inspection tasks. Package quantity is one gage per unit.

Key Features

• Class ZZ Plus accuracy with 0.00508 mm tolerance for reliable Go inspection
• Tool steel construction provides hardness and dimensional stability
• 10 microfinish surface coating minimizes wear and ensures consistent contact
• Conforms to ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability for calibration documentation
• Compatible with micrometers, verniers, and other precision measuring devices as a reference standard

Compatibility

Designed for Go inspection of 1.39 mm diameter bores and for use as a reference standard with micrometers, verniers, and other precision measuring devices, as noted in the product specifications.

Installation Notes

Plug gages are handled and deployed by trained metrology personnel or machinists performing dimensional inspection. Clean the gage and the bore being checked before use to prevent debris from affecting measurement results. Store the gage in its protective case when not in use to avoid nicks or corrosion that could compromise accuracy. Periodic recalibration against a traceable standard is recommended to maintain measurement integrity over time.