Vermont Gage 111155100 Class Zz Plus Plug Gage 0.551 in

Product Description

The VERMONT GAGE 111155100 is a Class ZZ Plus plug gage designed to verify bore and hole dimensions to a high degree of accuracy. Built from tool steel with a 10 microinch surface finish, this gage measures a nominal diameter of 0.551 inches with a tolerance of 0.0002 inches. It ships with a Certificate of Accuracy backed by NIST traceability, meeting the requirements of ASME B89.1. Machinists, quality technicians, and tool-room professionals rely on plug gages like this for go inspection routines and for setting micrometers, verniers, and other precision measuring instruments.

This plug gage is suited for production inspection, incoming quality control, and calibration setups in manufacturing and machining environments. It is commonly used wherever a reliable, traceable dimensional reference is needed for internal feature verification at the 0.551-inch nominal size. The 2.0-inch overall length makes it easy to handle during routine inspection work on the shop floor or in a metrology lab.

Key Features

• Class ZZ Plus tolerance class — 0.0002 inches total tolerance for precise go inspection
• 10 microinch surface finish for consistent, repeatable gage contact
• Tool steel construction for durability and dimensional stability under shop conditions
• Complies with ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST traceability
• Compact 2.0-inch overall length for easy single-hand use

Compatibility

Designed for go inspection applications and for setting micrometers, verniers, and other precision measuring devices requiring a traceable 0.551-inch reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists — no power source or mechanical installation is required. Store the gage in its protective case when not in use and avoid dropping or contact with abrasive surfaces to protect the finish. Clean the gage and the part bore before use to prevent debris from affecting measurement accuracy. Periodic recalibration against a traceable standard is recommended to maintain ASME B89.1 conformance.