Vermont Gage 112317770 Class Zz Plus Plug Gage 17.77mm

Product Description

The VERMONT GAGE 112317770 is a Class ZZ Plus plug gage designed for dimensional inspection of bored holes and machined features with a nominal diameter of 17.77 mm. Manufactured from tool steel with a 10 micro finish, this gage delivers a tolerance of 0.005 mm (0.00508 mm actual), meeting the requirements of ASME B89.1. It ships with a Certificate of Accuracy backed by NIST traceability, making it suitable for use in quality control environments where documentation is required. The overall length is 2.0 inches. Machinists, quality technicians, and metrology professionals use this type of gage for go-inspection work as part of incoming, in-process, or final inspection routines.

This plug gage is applied in go-inspection scenarios to verify that a drilled, reamed, or bored hole falls within its acceptable size limit. It is also used as a reference standard when setting micrometers, verniers, bore gages, and other measuring devices that require a known physical reference. Typical environments include machine shops, manufacturing floors, quality labs, and tool rooms working to tight dimensional tolerances. The ASME B89.1 standard compliance makes this gage appropriate for shops operating under ISO 9001, AS9100, or similar quality management frameworks.

Key Features

• 17.77 mm nominal diameter with 0.005 mm Class ZZ Plus tolerance per ASME B89.1
• Tool steel construction with 10 micro surface finish for repeatable, accurate measurement
• Includes Certificate of Accuracy with NIST traceability for documentation and audit requirements
• Overall length of 2.0 inches suits standard plug gage handles and fixtures
• Suitable for go-inspection use and as a reference standard for setting measuring instruments

Compatibility

Designed for go-inspection of holes and bores at 17.77 mm nominal diameter, and for use as a setting standard with micrometers, verniers, and other measuring devices requiring a precise physical reference.

Installation Notes

Plug gages of this type are handled by quality technicians and machinists following standard metrology practices. Store and handle the gage carefully to prevent burrs, nicks, or surface contamination that could affect accuracy. Clean both the gage and the workpiece bore before inspection to avoid debris-induced false readings. Calibration intervals should follow your facility quality plan; the included NIST-traceable certificate documents the initial accuracy at time of shipment.