Vermont Gage 111300050 Class Zz Plus Plug Gage 1.0005 in

Product Description

The VERMONT GAGE 111300050 is a Class ZZ Plus plug gage machined from tool steel and used to verify bore diameters to tight tolerances in production and inspection environments. It measures a nominal diameter of 1.0005 inches with a tolerance of 0.0002 inches and a 10 microinch surface finish, making it suitable for go inspection applications where dimensional accuracy is critical. Each unit ships with a Certificate of Accuracy that includes NIST traceability, supporting quality documentation requirements on the shop floor or in a metrology lab. Machinists, quality control technicians, and tool and die professionals rely on plug gages like this one for fast, repeatable pass/fail bore checks.

This plug gage is designed for go inspection use on bored, reamed, or drilled holes requiring close diameter control. It is also referenced when setting micrometers, verniers, and other comparative measuring devices to a known standard. Typical applications include production line inspection of machined components, incoming inspection of purchased parts, and calibration setups in machine shops or quality labs. The 10 microinch finish on the gage member ensures minimal wear on the contact surface during repeated insertion cycles.

Key Features

• 1.0005 inch nominal diameter with 0.0002 inch tolerance for precise bore inspection
• Class ZZ Plus classification per ASME B89.1 standard
• 10 microinch surface finish reduces wear and maintains dimensional integrity over repeated use
• Tool steel construction provides hardness and wear resistance in production environments
• Includes Certificate of Accuracy with NIST traceability for quality system compliance
• 2.0000 inch overall length provides a practical handling length for bench and floor inspection

Compatibility

Designed for go inspection of bored or reamed holes at 1.0005 inches nominal diameter, and for use as a setting standard with micrometers, verniers, and other precision measuring devices conforming to ASME B89.1 requirements.

Installation Notes

Plug gages are installed by qualified inspection or metrology personnel and require no tools for use beyond proper handling technique. Always clean and deburr the bore before insertion to avoid damage to the gage member. Store the gage in its protective case when not in use to prevent nicking or corrosion of the precision ground surface. Avoid dropping or contacting the gage member against hard surfaces, as this can alter the diameter and invalidate the NIST-traceable calibration.