Vermont Gage 112300550 Class Zz Plus Plug Gage 0.55 Mm

Product Description

The VERMONT GAGE 112300550 is a Class ZZ Plus plug gage designed for precise dimensional inspection of small bored holes and machined features. Manufactured from tool steel with a 10 microfinish surface coating, this gage checks a nominal diameter of 0.55 mm with a tolerance of 0.00508 mm. It meets ASME B89.1 standards and ships with a Certificate of Accuracy traceable to NIST. Machinists, quality technicians, and toolroom professionals use plug gages like this one to verify Go/No-Go acceptance criteria on production parts and to calibrate or set micrometers, verniers, and other measuring instruments.

This plug gage is suited for shop-floor and metrology lab environments where tight tolerance verification is required on small-diameter features. Its compact overall length of 2 inches makes it easy to handle in bench inspection setups. Typical applications include Go inspection of precision bores in manufacturing, as well as setting and verifying hand-held measuring devices. The included NIST-traceable Certificate of Accuracy supports quality management system documentation requirements.

Key Features

• Class ZZ Plus tolerance grade per ASME B89.1 for reliable Go inspection
• 0.55 mm nominal diameter with 0.00508 mm tolerance
• Tool steel construction for wear resistance in production environments
• 10 microfinish surface finish minimizes measurement error from surface irregularities
• Includes Certificate of Accuracy with NIST traceability for QMS compliance
• Compact 2-inch overall length for easy bench and handheld use

Compatibility

Designed for Go inspection of 0.55 mm diameter bores and for use as a setting standard with micrometers, verniers, and other precision measuring devices per ASME B89.1 requirements.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source or utility shutoff is required. Store the gage in a protective case away from moisture and contaminants to prevent corrosion of the tool steel. Clean the gage and the workpiece bore before inspection to avoid false readings from debris or oil. Handle with clean cotton gloves to prevent thermal expansion from body heat from affecting measurement accuracy.