Vermont Gage 112317750 Class Zz Plus Plug Gage 17.75 Mm

Product Description

The VERMONT GAGE 112317750 is a Class ZZ Plus cylindrical plug gage with a 17.75 mm diameter, designed for go inspection of machined bores and precision holes. Built from tool steel with a 10 microfinish surface, it delivers a tolerance of 0.00508 mm, meeting ASME B89.1 standards. Each unit ships with a Certificate of Accuracy that includes NIST traceability, making it suitable for quality-controlled manufacturing and inspection environments. Machinists, quality technicians, and toolroom professionals use this gage to verify that a finished bore falls within the specified lower tolerance limit before a part advances to the next stage of production.

This plug gage is used in go inspection applications where confirming minimum bore acceptance is required. It is compatible with standard gage handle systems and works alongside set micrometers, verniers, and other precision measuring devices for complete dimensional verification workflows. Typical applications include production floor inspection of drilled, reamed, or bored holes in metal components. The 2.0-inch overall length suits bench and in-process inspection setups across general machining and tight-tolerance manufacturing environments.

Key Features

• Class ZZ Plus tolerance of 0.00508 mm for precise go inspection
• 17.75 mm diameter, 2.0-inch overall length
• Tool steel construction with 10 microfinish surface
• Meets ASME B89.1 dimensional standards
• Includes Certificate of Accuracy with NIST traceability
• Compatible with set micrometers, verniers, and standard measuring devices

Compatibility

Designed for use with standard plug gage handle systems and applicable to go inspection of 17.75 mm nominal bores. Per the supplier data, this gage is also suited for use alongside set micrometers, verniers, and other precision measuring devices.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source or electrical shutoff is required before use. Ensure the bore and gage surfaces are clean and free of chips, coolant, or debris before inspection to avoid false readings or surface damage. Store the gage in its protective case when not in use to preserve the 10 microfinish surface and dimensional integrity. Follow shop calibration procedures and re-verify against the Certificate of Accuracy at intervals consistent with your quality management system.