Vermont Gage 112117900 Class Zz Plus Plug Gage 17.9mm

Product Description

The VERMONT GAGE 112117900 is a Class ZZ Plus cylindrical plug gage designed to verify bore diameters to a high degree of accuracy. Built from tool steel, this go-style gage checks that a machined hole or bore meets minimum size requirements. It carries a diameter of 17.90 mm with a tolerance of 0.005 mm, making it suitable for precision inspection work. The gage ships with a Certificate of Accuracy traceable to NIST, confirming it meets ASME B89.1 standards. Machinists, quality technicians, and toolroom professionals use plug gages like this one in production inspection, equipment calibration, and verification of measuring instruments.

This plug gage is used in go inspection applications across manufacturing and machine shop environments. It is appropriate for checking bores in both production-line and toolroom settings. The 10 microfinish surface on the gage diameter ensures consistent, repeatable contact with the bore surface. Compatible applications include setting micrometers, verniers, and other dimensional measuring devices to a known reference. The overall length is 2.0000 inches, making it easy to handle for bench inspection work. This gage suits any facility requiring traceable, standards-based dimensional verification for bores near 17.90 mm.

Key Features

• Class ZZ Plus tolerance of 0.005 mm for precision go inspection
• 17.90 mm diameter with 10 microfinish surface for repeatable contact
• Tool steel construction for durability and wear resistance
• Includes Certificate of Accuracy with NIST traceability
• Meets ASME B89.1 dimensional standards
• Compatible with setting micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection use with micrometers, verniers, and other dimensional measuring devices requiring a 17.90 mm reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists in inspection environments, not installed in mechanical systems. Store the gage in its protective case when not in use to prevent surface damage. Clean the gage surface before each use to avoid measurement error from debris or oil buildup. Handle with care to prevent drops or impacts that could affect calibration.