Vermont Gage 111154900 Class Zz Plus Plug Gage 0.549 in

Product Description

The VERMONT GAGE 111154900 is a Class ZZ Plus plug gage used to verify bore and hole dimensions in precision machining and quality control applications. The gage measures a nominal diameter of 0.549 inches with a tolerance of 0.0002 inches and a 10 microinch surface finish, delivering the accuracy required for go inspection work. Built from tool steel, it is designed for repeatable, reliable dimensional verification. Each unit ships with a Certificate of Accuracy that carries NIST traceability, making it suitable for environments where documented calibration records are required. Machinists, quality technicians, and tool room personnel are the primary users of this instrument.

This plug gage is suited for go inspection of holes and bores in both production floor and inspection lab settings. It is also used to set and verify micrometers, verniers, and other measuring devices that require a known reference standard. Typical applications include incoming inspection, in-process quality checks, and final acceptance of machined components. The 2.0-inch overall length provides a practical handle length for single-hand use during routine gauging operations. Residential and light commercial precision shops as well as high-volume production facilities rely on this class of instrument.

Key Features

• Class ZZ Plus tolerance rating with 0.0002 inches tolerance for precision go inspection
• 0.549 inches nominal measurement diameter
• 10 microinch surface finish for consistent, accurate contact readings
• Tool steel construction for durability and wear resistance in production environments
• Meets ASME B89.1 dimensional standards
• Includes Certificate of Accuracy with NIST traceability for documented quality programs

Compatibility

Designed for go inspection of bores and holes at 0.549 inches nominal diameter, and suitable for use as a reference standard when setting micrometers, verniers, and other precision measuring devices.

Installation Notes

This gage is handled and used by machinists and quality technicians — no power source or fastener installation is required. Clean the gage and the workpiece bore before use to prevent debris from affecting readings. Store the gage in its protective case when not in use to prevent surface damage and corrosion. Follow your facility calibration schedule and ASME B89.1 handling guidelines to maintain traceability and measurement integrity.