Vermont Gage 112108780 Class Zz Plus Plug Gage 8.78 Mm

Product Description

The VERMONT GAGE 112108780 is a Class ZZ Plus cylindrical plug gage manufactured from tool steel for use in precision dimensional inspection. Designed to verify bore and hole diameters to tight tolerances, this gage measures 8.78 mm in diameter with a tolerance of 0.005 mm and a surface finish of 10 microfinish. The overall length is 2.0000 inches. It ships with a Certificate of Accuracy traceable to NIST, confirming compliance with ASME B89.1 standards. Machinists, quality technicians, and metrology professionals use this gage as part of Go inspection routines to confirm that a machined feature meets its lower dimensional limit.

This plug gage is suited for incoming inspection, in-process quality control, and final inspection in manufacturing environments. It is compatible with Go inspection workflows and can be used alongside set micrometers, verniers, and other precision measuring devices to establish or verify measurement system accuracy. The 8.78 mm diameter makes it a direct fit for applications requiring close tolerance hole verification at that specific nominal size. Typical users include CNC machinists, quality engineers, and tool room technicians working to ASME dimensional standards.

Key Features

• Class ZZ Plus tolerance classification with 0.005 mm tolerance for precise Go inspection
• 10 microfinish surface coating for consistent gage contact and reduced wear
• Tool steel construction provides hardness and dimensional stability
• Includes Certificate of Accuracy with NIST traceability
• Conforms to ASME B89.1 dimensional gage standards
• Overall length of 2.0000 inches suits standard gage handle holders

Compatibility

Designed for use in Go inspection applications and compatible with set micrometers, verniers, and other precision measuring devices as stated by the manufacturer. Intended for bore and hole inspection at the 8.78 mm nominal diameter.

Installation Notes

Plug gages are installed and removed by hand without the use of power tools. Clean the gage and the bore thoroughly before use to prevent contamination from affecting measurement accuracy. Store the gage in its protective case when not in use to prevent corrosion and surface damage to the precision-ground finish. Calibration intervals should follow your facility quality plan and applicable metrology standards.