Vermont Gage 111180400 Class Zz Plus Plug Gage 0.804 in

Product Description

The VERMONT GAGE 111180400 is a Class ZZ Plus plug gage designed for precision go inspection of bored holes, reamed bores, and similar internal features. Measuring 0.804 inches in diameter with a tolerance of 0.0002 inches, this tool steel gage provides reliable dimensional verification in machine shops, toolrooms, and quality-control environments. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming conformance to ASME B89.1 standards. The 10 microinch surface finish on the gage member ensures consistent, repeatable contact during inspection. Machinists, QC technicians, and tool-and-die professionals use this type of gage as part of a standard go/no-go inspection routine.

This plug gage is suited for go inspection applications where precise bore diameter verification is required. It is also compatible with setting and checking micrometers, verniers, and other measuring devices that require a known reference standard. The 0.804-inch size fills a common range in medium-bore inspection work found in both production and job-shop environments. Its compact overall length of 2.0 inches makes it easy to handle and store alongside other gage members in a standard gage block or pin gage set.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy go inspection
• 10 microinch surface finish for consistent gage member contact
• Tool steel construction for durability and dimensional stability
• NIST-traceable Certificate of Accuracy included with each unit
• Conforms to ASME B89.1 dimensional gage standards
• Usable as a reference standard for setting micrometers, verniers, and comparable measuring instruments

Compatibility

Designed for go inspection of internal features and for use with micrometers, verniers, and other measuring devices requiring a calibrated reference standard, as specified by the manufacturer.

Installation Notes

Plug gages are handled and used by qualified machinists or QC technicians following standard metrology practices. Clean the gage member and the bore thoroughly before use to prevent false readings or surface damage. Never force the gage into an undersize bore, as this can damage both the gage and the workpiece. Store the gage in its protective case or a dedicated gage holder to preserve the surface finish and dimensional integrity.