Vermont Gage 111129900 Class Zz Plus Plug Gage 0.299 in

Product Description

The VERMONT GAGE 111129900 is a Class ZZ Plus plug gage machined from tool steel for precise go-style dimensional inspection. Designed to a 0.299 inch nominal diameter with a tolerance of 0.0002 inches, this gage confirms whether a bored, reamed, or drilled hole falls within acceptable limits. The 10 microfinish surface reduces wear on the gage and the workpiece during repeated checks. Each unit ships with a Certificate of Accuracy traceable to NIST, meeting ASME B89.1 standards. Machinists, toolroom technicians, and quality control inspectors rely on plug gages like this one for fast, reliable attribute inspection on production floors and in metrology labs.

This plug gage is suited for go inspection checks on holes and bores in manufacturing and fabrication environments. It is also used to set and verify micrometers, verniers, and other measuring devices requiring a known reference diameter. At 2.0 inches overall length, it handles comfortably for bench inspection and in-process checks. Typical applications include production part inspection, first-article verification, and calibration reference tasks where a traceable, fixed-limit gage is required.

Key Features

• Class ZZ Plus tolerance grade to ASME B89.1 for reliable attribute inspection
• 0.299 inch nominal diameter with 0.0002 inch tolerance for tight dimensional control
• 10 microfinish surface finish reduces wear and extends service life
• Tool steel construction provides hardness and dimensional stability
• Includes Certificate of Accuracy with NIST traceability for audit and calibration records
• Suitable for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of holes and bores at 0.299 inch nominal diameter, and for use as a reference standard when setting micrometers, verniers, and similar measuring devices in toolroom or production inspection applications.

Installation Notes

Plug gages are handled and used by trained machinists, toolroom technicians, or quality control personnel. Store the gage in its protective case when not in use to prevent surface damage or corrosion. Never force the gage into a hole; light hand pressure is sufficient for a go-style check. Clean the gage and the workpiece bore before each use to ensure accurate readings and to protect the 10 microfinish surface.