Vermont Gage 111169000 Class Zz Plus Plug Gage 0.69 in

Product Description

The VERMONT GAGE 111169000 is a Class ZZ Plus plug gage used to verify bore and hole dimensions in precision machining and inspection workflows. It measures a nominal diameter of 0.69 inches with a tolerance of 0.0002 inches and a 10 microinch surface finish. The gage is manufactured from tool steel for hardness and dimensional stability. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for documented quality control processes. Licensed metrology technicians, machinists, and quality inspectors rely on this type of gage for repeatable go-type attribute inspection.

This plug gage is designed for go inspection applications where a controlled cylindrical member must pass through a bore to confirm the hole is within minimum material condition. It is also used to calibrate and verify set micrometers, verniers, and other dimensional measuring devices. Typical environments include machine shops, manufacturing quality labs, and toolroom inspection stations where ASME B89.1 standards govern gage acceptance criteria.

Key Features

• 0.69 inches nominal measurement diameter for precise bore verification
• 0.0002 inches tolerance to Class ZZ Plus specification per ASME B89.1
• 10 microinch surface finish for consistent, low-friction gage entry
• Tool steel construction for wear resistance and dimensional stability
• Includes Certificate of Accuracy with NIST traceability for documentation compliance
• Suitable for go inspection and calibration of measuring instruments

Compatibility

Designed for go inspection of bores and holes at 0.69 inches nominal diameter, and for use as a setting standard with micrometers, verniers, and other dimensional measuring devices conforming to ASME B89.1 gage acceptance requirements.

Installation Notes

Plug gages are handled and used by metrology technicians and quality inspectors, not installed in a mechanical system. Before use, clean the gage and the bore with a lint-free cloth to remove chips, oil, and debris that could affect readings or scratch the gage surface. Never force the gage member into an undersized hole, as this can damage the precision ground surface and compromise dimensional accuracy. Store the gage in its protective case away from heat sources and corrosive environments to maintain NIST-traceable certification integrity.