Vermont Gage 111187700 Class Zz Plus Plug Gage 0.877 in

Product Description

The VERMONT GAGE 111187700 is a Class ZZ Plus plug gage designed to measure bores and holes at a nominal diameter of 0.877 inches with a tolerance of 0.0002 inches. Built from tool steel with a 10 microfinish surface, this gage delivers consistent, repeatable dimensional verification in shop-floor and inspection environments. It ships with a Certificate of Accuracy traceable to NIST, meeting ASME B89.1 standards. Machinists, quality control technicians, and tool-room professionals use this gage as a reliable go-inspection reference when verifying hole size conformance on production or maintenance work.

This plug gage is suited for go inspection tasks where confirming minimum acceptable bore diameter is required. It is also used to set and verify micrometers, verniers, and other measuring devices to a known standard. Typical applications include incoming inspection, in-process quality checks, and calibration of variable measuring instruments in both production machining and precision assembly environments. Its compact 2.0-inch overall length makes it easy to handle and store at a workstation or in a gage crib.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for reliable go-inspection accuracy
• Tool steel construction for hardness and wear resistance in repeated use
• 10 microfinish surface provides consistent, low-friction gage contact
• NIST-traceable Certificate of Accuracy included for documentation and calibration records
• Meets ASME B89.1 dimensional gage standards
• Compact 2.0-inch overall length for easy bench or crib storage

Compatibility

Designed as an OEM-style go plug gage for inspecting bores and holes at 0.877 inches nominal diameter, and for setting or verifying micrometers, verniers, and other precision measuring devices requiring a traceable reference standard.

Installation Notes

Plug gages should be handled with clean, dry hands or cotton gloves to prevent corrosion and surface contamination that can affect measurement accuracy. Before use, verify the gage and workpiece are at the same temperature to minimize thermal expansion error. Store the gage in its protective case when not in use, and return it for periodic calibration per your facility quality management plan.