Vermont Gage 112115120 Class Zz Plus Plug Gage 15.12mm

Product Description

The VERMONT GAGE 112115120 is a Class ZZ Plus cylindrical plug gage designed for precision bore inspection in metrology and quality-control applications. The gage measures 15.12 mm in diameter with a tolerance of 0.00508 mm, making it suitable for Go inspection of close-tolerance bores. It is manufactured from tool steel and features a 10 microfinish surface on the gage member. At 2.0000 inches overall length, it fits standard handle systems used in production and inspection environments. A Certificate of Accuracy with NIST traceability is included, satisfying documentation requirements for ISO and AS9100 quality systems. Calibration technicians, machinists, and quality engineers are the primary users.

This plug gage is used in machine shops, manufacturing facilities, and inspection labs where bore diameter must be verified against a Go limit. It is suited for residential and commercial production environments requiring compliance with ASME B89.1 standards. Typical applications include checking machined bores prior to assembly, setting and verifying micrometers, verniers, and other measuring devices. The 15.12 mm size fits metric bore specifications common in precision mechanical assemblies.

Key Features

• Class ZZ Plus tolerance: 0.00508 mm for high-accuracy Go inspection
• 10 microfinish surface for consistent, repeatable gage contact
• Tool steel construction for wear resistance and dimensional stability
• Meets ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• 2.0000-inch overall length compatible with standard plug gage handles

Compatibility

Designed as an OEM-style Go plug gage for use with standard adjustable gage handles and setting fixtures used in precision bore inspection per ASME B89.1.

Installation Notes

Plug gages should be handled and stored according to ASME B89.1 guidelines to prevent damage to the gage surface. Clean the bore and gage member before use to ensure accurate measurement and prevent premature wear. Do not force the gage member into the bore; Go gages should pass under the weight of the gage alone or with minimal hand pressure. Inspection personnel should wear clean gloves or use proper handling tools to avoid thermal expansion errors from hand heat.