Vermont Gage 111125000 Class Zz Plus Plug Gage 0.25 in

Product Description

The VERMONT GAGE 111125000 is a Class ZZ Plus plug gage designed for precise inside-diameter inspection of machined bores and holes. Built from tool steel, this go-style gage checks whether a feature falls within acceptable dimensional limits. It carries a tolerance of 0.0002 inches and a 10 microfinish surface quality, making it suitable for inspection work where consistent, repeatable results are required. Each unit ships with a Certificate of Accuracy with NIST Traceability, confirming it meets ASME B89.1 standards. Machinists, quality technicians, and metrology professionals use this gage to verify bore dimensions quickly and reliably at the bench or on the shop floor.

This plug gage is intended for go inspection of features with a nominal diameter of 0.25 inches. It is commonly used alongside set micrometers, verniers, and other measuring devices to establish reference points or verify tooling calibration. The 2.0-inch overall length provides adequate handling clearance for most bench and in-process inspection scenarios. Typical applications include checking drilled, reamed, or bored holes in production or job-shop environments where conformance to print tolerances must be documented.

Key Features

• Class ZZ Plus tolerance grade at 0.0002 inches for reliable go inspection
• Tool steel construction for durability and wear resistance
• 10 microfinish surface for consistent gage-to-part contact
• Includes Certificate of Accuracy with NIST Traceability
• Meets ASME B89.1 standards
• 2.0-inch overall length suits standard bench inspection setups

Compatibility

Designed for go inspection of 0.25-inch nominal diameter bores and features; compatible for use with set micrometers, verniers, and other calibrated measuring devices as stated by the manufacturer.

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 striking it against hard surfaces, as impact can alter calibration. Clean the gage and the bore being checked before use to prevent false readings from debris or cutting fluid. Periodic recalibration against NIST-traceable standards is recommended to maintain measurement integrity over time.