Vermont Gage 111155400 Class Zz Plus Plug Gage 0.554 in

Product Description

The VERMONT GAGE 111155400 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bored holes, drilled passages, and other cylindrical features. It measures a nominal diameter of 0.554 inches with a tolerance of 0.0002 inches and a 10 microfinish surface finish, delivering the accuracy required for go inspection work. Manufactured from tool steel, the gage is built to resist wear under repeated use in shop and metrology environments. Each unit ships with a Certificate of Accuracy backed by NIST traceability, confirming conformance to ASME B89.1 standards. Machinists, quality technicians, and tool-room professionals use this gage as a reliable reference instrument in production and inspection workflows.

This plug gage is suited for go inspection of machined parts in both production-floor and quality-lab settings. It is also appropriate for setting and verifying micrometers, verniers, bore gages, and other comparative measuring devices where a certified dimensional reference is required. The 0.554-inch diameter makes it applicable to a range of small-bore inspection tasks in light manufacturing, precision machining, and general metrology. The overall length of 2.0 inches allows comfortable single-hand use in most inspection fixtures or handheld applications.

Key Features

• Class ZZ Plus accuracy with 0.0002-inch tolerance for reliable go inspection
• 10 microfinish surface finish reduces wear and ensures consistent gage contact
• Tool steel construction provides durability under repetitive inspection use
• NIST-traceable Certificate of Accuracy included with each unit
• Conforms to ASME B89.1 dimensional gage standards
• Compact 2.0-inch overall length suits handheld and fixture-based inspection

Compatibility

Designed for go inspection of cylindrical bores and for use as a setting reference with micrometers, verniers, bore gages, and other measuring devices requiring a certified 0.554-inch diameter plug reference.

Installation Notes

Plug gages are handled and stored by quality technicians and toolroom personnel, not installed in the traditional sense. Clean the gage and the part bore with a lint-free cloth before use to prevent debris from affecting the measurement. Never force a go gage through a bore; if resistance is encountered, the feature is out of tolerance. Store the gage in its protective case away from temperature extremes to maintain dimensional stability and surface finish integrity.