Vermont Gage 111187500 Class Zz Plus Plug Gage 0.875 in

Product Description

The VERMONT GAGE 111187500 is a Class ZZ Plus plug gage manufactured from tool steel for dimensional inspection of precision bores and holes. It measures a nominal diameter of 0.875 inches with a tolerance of 0.0002 inches and a surface finish of 10 microinches. Each unit ships with a Certificate of Accuracy traceable to NIST, confirming it meets ASME B89.1 standards. Machinists, quality technicians, and metrologists use this gage to verify that bored, reamed, or drilled features fall within specification before parts move to the next stage of production or assembly.

This plug gage is suited for go inspection applications in manufacturing and quality control environments. It is also used to calibrate and verify the accuracy of set micrometers, verniers, and other measuring devices. The 0.875-inch diameter makes it appropriate for a range of medium-bore components common in general machining, toolroom work, and precision fabrication shops. Its compact overall length of 2.0 inches allows easy handling in both bench and floor inspection settings.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy go inspection
• Tool steel construction for durability and wear resistance in production use
• 10 microinch surface finish supports consistent, repeatable gage contact
• Includes Certificate of Accuracy with NIST traceability
• Meets ASME B89.1 dimensional standard
• Compact 2.0-inch overall length for easy bench and floor use

Compatibility

Designed for go inspection of 0.875-inch nominal diameter bores and as a reference standard for setting and verifying micrometers, verniers, and comparable measuring devices.

Installation Notes

Plug gages are handled and used by quality technicians and metrologists rather than installed in the traditional sense. Store the gage in its case when not in use to prevent damage to the lapped surface. Clean the gage and the part bore with a lint-free cloth before use to remove chips, oil, or debris that could affect the reading. Never force the gage into an undersized bore, as this will damage the precision surface and void traceability.