Vermont Gage 111145400 Class Zz Plus Plug Gage 0.454 in

Product Description

The VERMONT GAGE 111145400 is a Class ZZ Plus plug gage machined from tool steel and designed for precise dimensional inspection of bored holes and internal features. At 0.454 inches in diameter, it meets ASME B89.1 standards and holds a tolerance of 0.0002 inches, making it suitable for go-type inspection work where accuracy is critical. The 10 microfinish surface reduces wear on the gage and the workpiece during use. Each unit ships with a Certificate of Accuracy backed by NIST traceability, supporting quality system documentation requirements. Toolroom technicians, machinists, and quality control inspectors are the primary users.

This plug gage is used in go inspection applications to verify that a bored or drilled hole falls within specified dimensional limits. It is also appropriate as a setting standard for micrometers, vernier calipers, and other measuring devices requiring a known reference diameter. The 2.0-inch overall length provides comfortable handling during bench inspection or in-process gauging. Typical environments include manufacturing toolrooms, machine shops, and quality inspection stations handling precision components.

Key Features

• Class ZZ Plus accuracy with 0.0002 inches tolerance per ASME B89.1
• Tool steel construction for durability and dimensional stability
• 10 microfinish surface for reduced wear during repeated use
• Includes Certificate of Accuracy with NIST traceability for QMS compliance
• Usable as a setting standard for micrometers, verniers, and other measuring instruments

Compatibility

Designed as a go-type plug gage for inspecting internal bored features and for setting precision measuring instruments requiring a 0.454-inch reference diameter.

Installation Notes

Plug gages should be handled by qualified metrology or toolroom personnel following applicable ASME inspection procedures. Keep the gage clean and lightly oiled when not in use to prevent corrosion of the tool steel surface. Never force the gage into a workpiece; damage to the gage or workpiece can result from improper insertion technique. Store in a protective case away from temperature extremes to maintain dimensional accuracy.