Vermont Gage 111306850 Class Zz Plus Plug Gage 0.0685 in

Product Description

The VERMONT GAGE 111306850 is a Class ZZ Plus plug gage designed for precision go-inspection of bored holes, drilled passages, and machined features at 0.0685 inches in diameter. Machined from tool steel, this gage holds a tolerance of 0.0002 inches and carries a 10 microfinish surface finish on the measuring member. Each unit ships with a Certificate of Accuracy that includes NIST traceability, making it suitable for use in calibrated inspection environments. It is installed and used by machinists, quality technicians, and metrologists verifying tight-tolerance work in manufacturing and toolroom settings. Overall length is 2.0000 inches.

This plug gage is applied in go-inspection routines to verify that a hole or bore meets its minimum size requirement, confirming the workpiece will accept a mating part. Typical use cases include incoming inspection, in-process checks on CNC-machined components, and calibration verification of set micrometers, verniers, and other precision measuring devices. The small diameter makes it well suited for fine-pitch fastener holes, instrument bores, and similar close-tolerance features found in aerospace, medical device, and precision mechanical assemblies.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy go-inspection
• 10 microfinish surface on measuring member reduces gage wear and improves contact consistency
• Tool steel construction for hardness and dimensional stability in daily inspection use
• Includes Certificate of Accuracy with NIST traceability for documented calibration compliance
• Conforms to ASME B89.1 gage standards
• Compact 2.0000-inch overall length suits benchtop and handheld inspection use

Compatibility

Designed as a go-inspection plug gage for holes and bores at 0.0685 inches in diameter. Also used to set and verify micrometers, verniers, and other precision measuring devices requiring a traceable reference at this diameter.

Installation Notes

Plug gages are handled and used by quality technicians and machinists following standard metrology practices. Before use, clean the gage and the workpiece bore with a lint-free cloth to remove chips, coolant, and debris that could cause false readings or gage wear. Never force this gage through a hole; light hand pressure only is appropriate for a go gage at this diameter. Store the gage in its protective case when not in use to preserve the surface finish and dimensional integrity.