Vermont Gage 112317790 Class Zz Plus Plug Gage 17.79mm

Product Description

The VERMONT GAGE 112317790 is a Class ZZ Plus plug gage designed for dimensional inspection of bored holes, machined bores, and precision-fitted openings. It checks whether a hole falls within acceptable tolerance limits using a Go inspection method. Machined from tool steel with a 10 Micro finish, this gage has a nominal diameter of 17.79 mm and holds a tolerance of 0.005 mm (0.00508 mm actual). Overall length is 2.0 inches. It is used by machinists, QC inspectors, and tool room technicians who require traceable, standards-compliant measurement tools.

This plug gage suits Go inspection applications in machine shops, manufacturing facilities, and tool rooms. It is compatible with use alongside micrometers, verniers, and other precision measuring devices for process verification and incoming or in-process inspection. Each unit ships with a Certificate of Accuracy with NIST Traceability, making it suitable for regulated production environments and quality management systems that require documented calibration references.

Key Features

• Class ZZ Plus tolerance classification for Go inspection applications
• Nominal diameter of 17.79 mm with 0.005 mm tolerance
• Tool steel construction with 10 Micro surface finish
• Includes Certificate of Accuracy with NIST Traceability
• Conforms to ASME B89.1 standards
• Overall length of 2.0 inches

Compatibility

Designed for use as a Go plug gage in conjunction with set micrometers, verniers, and other precision measuring devices for dimensional inspection of 17.79 mm diameter features.

Installation Notes

Plug gages are handled and applied by QC inspectors and machinists in controlled inspection environments. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel surface. Never force the gage into a bore; Go members should enter under the weight of the gage alone or with light hand pressure. Store with the Certificate of Accuracy to maintain traceability records.