Vermont Gage 111185300 Class Zz Plus Plug Gage 0.853 in

Product Description

The VERMONT GAGE 111185300 is a Class ZZ Plus plug gage designed to perform go inspection checks on precision bores and holes. Machined from tool steel and held to a tolerance of 0.0002 inches, this gage provides a reliable reference for verifying whether a bore falls within acceptable dimensional limits. The working surface carries a 10 microfinish, which reduces wear during repeated insertions and helps maintain gage accuracy over time. A Certificate of Accuracy with NIST traceability is included, satisfying documentation requirements in quality-controlled manufacturing and inspection environments. Licensed metrologists, quality technicians, and toolroom machinists are the primary users of this instrument.

This plug gage is suited for go inspection of bores measuring 0.853 inches in diameter in production or toolroom settings. It is also used to calibrate and set measuring devices such as micrometers, verniers, and other comparative measuring instruments. Applications span general manufacturing, aerospace component inspection, and any precision machining operation where bore acceptance criteria must be verified to ASME B89.1 standards.

Key Features

• Class ZZ Plus tolerance grade with 0.0002 inch tolerance for precision go inspection
• 10 microfinish working surface reduces wear and preserves dimensional accuracy during repeated use
• Tool steel construction provides hardness and durability suitable for production inspection environments
• NIST-traceable Certificate of Accuracy included for quality documentation and calibration records
• Conforms to ASME B89.1 standards for gage blanks and plain cylindrical plug gages
• Overall length of 2.0 inches provides a stable grip and consistent insertion depth

Compatibility

Designed for go inspection of bores at 0.853 inches nominal diameter. Also suitable for setting micrometers, verniers, and other precision measuring devices to this nominal dimension in accordance with ASME B89.1.

Installation Notes

Plug gages are handled and used by quality technicians and toolroom machinists — no installation trade license is required, but proper gage handling procedures apply. Always clean the gage and the bore before use to prevent debris from causing false readings or surface damage. Store the gage in its protective case when not in use to prevent corrosion and impact damage to the precision ground surface. Do not force the gage into an undersized bore; forced insertion can damage both the gage and the workpiece.