Vermont Gage 112115300 Class Zz Plus Plug Gage 15.3mm

Product Description

The VERMONT GAGE 112115300 is a Class ZZ Plus cylindrical plug gage machined from tool steel and designed for go inspection of bored, reamed, or machined holes. The gage measures 15.30 mm in diameter with a tolerance of 0.00508 mm (0.005 mm), making it suitable for precise dimensional verification in production and quality-control environments. A 10 microfinish surface treatment on the gaging diameter ensures consistent, repeatable contact. An overall length of 2.0000 inches keeps the gage compact for bench or in-process use. Each unit ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for ISO and AS9100 quality systems.

This plug gage is used in manufacturing, machine shops, and inspection labs to verify that a bored or reamed hole accepts a go member without interference. It is also suited for setting micrometers, verniers, and other comparative measuring devices. The Class ZZ Plus designation indicates a tighter tolerance than standard Class ZZ, making this gage appropriate for applications demanding higher measurement confidence. Installation is performed by metrology technicians, quality inspectors, or machining professionals during in-process checks or final part inspection.

Key Features

• 15.30 mm gaging diameter with 0.00508 mm tolerance for precise go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface on gaging diameter for consistent contact and repeatable readings
• Overall length of 2.0000 inches for compact bench or in-process use
• Includes Certificate of Accuracy with NIST traceability for quality-system documentation
• Conforms to ASME B89.1 standards for plain gages

Compatibility

Designed for go inspection of 15.30 mm diameter holes and for setting micrometers, verniers, and other comparative measuring devices in production and quality-control applications.

Installation Notes

Plug gages are handled and applied by metrology technicians or quality inspectors. Clean the gage and the workpiece bore with a lint-free cloth before use to prevent debris from affecting the reading. Apply light, consistent hand pressure when inserting the gage into the bore — never force or hammer a plug gage into a hole. Store the gage in its protective case when not in use to prevent surface damage and corrosion that would affect calibration.