Vermont Gage 111144700 Class Zz Plus Plug Gage 0.447 in

Product Description

The VERMONT GAGE 111144700 is a Class ZZ Plus plug gage ground from tool steel and designed for go inspection of 0.447-inch diameter bores and holes. It holds a tolerance of 0.0002 inches and features a 10 microfinish surface, providing the dimensional accuracy and surface quality required for reliable pass/fail gauging. Each unit ships with a Certificate of Accuracy that includes NIST traceability, meeting ASME B89.1 standards. Machinists, quality technicians, and toolroom professionals use this gage to verify hole size conformance on production parts, to set micrometers, and to calibrate verniers and other measuring devices.

This plug gage is suited for dimensional inspection tasks in machine shops, manufacturing facilities, and toolrooms where tight bore tolerances must be verified. It works as a go member in go/no-go gauging setups and also serves as a reference standard for setting variable measuring instruments. The 2.0-inch overall length provides comfortable handling for bench and inline inspection work. Typical users include quality control technicians and precision machinists working to ASME or equivalent dimensional standards.

Key Features

• Class ZZ Plus tolerance grade at 0.0002 inches for high-accuracy go inspection
• 10 microfinish surface for consistent gage-to-bore contact and reduced wear
• Tool steel construction for hardness and dimensional stability over service life
• Includes Certificate of Accuracy with NIST traceability per ASME B89.1
• Compatible with go/no-go setups and usable as a reference standard for micrometers, verniers, and other measuring devices

Compatibility

Designed for go inspection of 0.447-inch diameter features; also used to set micrometers, verniers, and other measuring devices requiring a precision reference standard.

Installation Notes

Plug gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store the gage in its protective case when not in use and allow it to reach ambient temperature before gauging to avoid thermal expansion errors. Inspection should be performed by a qualified quality technician or machinist following facility calibration procedures and applicable ASME B89.1 guidelines. Do not force the gage into a bore; light hand pressure only is appropriate for go inspection.