Vermont Gage 111168400 Class Zz Plus Plug Gage 0.684 in

Product Description

The VERMONT GAGE 111168400 is a Class ZZ Plus plug gage designed to measure bore diameters with precision in go inspection applications. Machined from tool steel and finished to a 10 microinch surface finish, this plug gage holds a tolerance of 0.0002 inches, making it suitable for high-accuracy dimensional verification. The 0.684-inch measurement diameter and 2.0-inch overall length make it a compact, easy-to-handle tool on the shop floor or in a quality lab. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming conformance to ASME B89.1 standards. Machinists, quality technicians, and metrology professionals use this gage to verify hole sizes during production and final inspection.

This plug gage is used in go inspection routines where a bore must meet a minimum size requirement before a part advances in the production process. It is also suited for setting and verifying micrometers, verniers, and other measuring devices in tool rooms and inspection departments. The 0.684-inch diameter is a fixed size, so verify your target bore specification before ordering. Applications span precision machining, aerospace, automotive, and general manufacturing environments where ASME B89.1 compliance is required.

Key Features

• 0.684-inch measurement diameter with 0.0002-inch tolerance for high-precision go inspection
• Tool steel construction for wear resistance and dimensional stability
• 10 microinch surface finish for accurate, repeatable contact with bore surfaces
• 2.0-inch overall length for easy single-hand handling in confined inspection setups
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards

Compatibility

Designed for go inspection of 0.684-inch diameter bores and for use as a setting standard with micrometers, verniers, and other precision measuring devices. Confirm bore nominal diameter and tolerance requirements before selecting this fixed-size gage.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power tools or trade licenses are required, but clean, calibrated conditions are essential. Before use, clean the gage and bore thoroughly to remove chips, oil film, or debris that could affect the reading. Do not force the gage into a bore; apply light, even hand pressure only, as forcing can damage both the gage and the part surface. Store the gage in its case when not in use to protect the finished surface and maintain calibration integrity.