Vermont Gage 111155000 Class Zz Plus Plug Gage 0.55 in

Product Description

The VERMONT GAGE 111155000 is a Class ZZ Plus plug gage designed for precision dimensional inspection of 0.55-inch diameter bores and holes. Manufactured from tool steel, it holds a tolerance of 0.0002 inches and features a 10 microfinish surface, making it suitable for Go inspection work on production floors and in calibration labs. Each unit ships with a Certificate of Accuracy traceable to NIST, providing the documentation traceability that quality systems require. Metrology technicians, machinists, and quality inspectors use this gage to verify that machined features meet specified limits before parts move to the next stage of production.

This plug gage is sized for Go inspection of 0.55-inch diameter features and is compatible with use alongside set micrometers, verniers, and other measuring devices during calibration and inspection routines. It is suited for both job-shop and production-line environments where consistent bore acceptance criteria must be verified to ASME B89.1 standards. The compact overall length of 2.0 inches makes it easy to handle during repetitive inspection tasks.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for reliable Go inspection decisions
• Tool steel construction for wear resistance and dimensional stability
• 10 microfinish surface for smooth, accurate seating in inspected bores
• Includes Certificate of Accuracy with NIST traceability for quality system documentation
• Conforms to ASME B89.1 standard
• Overall length of 2.0 inches for comfortable single-hand use

Compatibility

Designed for Go inspection of 0.55-inch diameter bores and compatible for use with set micrometers, verniers, and other measuring devices as stated by the manufacturer.

Installation Notes

Plug gages are handled and used by metrology technicians, machinists, and QC inspectors — no power tools or fasteners are required. Keep the gage clean and lightly oiled when stored to prevent corrosion of the tool steel body. Never force the gage into a bore; damage to the gage or workpiece can result. Store separately from other metal tooling to avoid nicking the precision-ground surface.