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Because of the limits of manufacturingall nominal part dimensions require working tolerances for production. This program, part of the Fundamentals of Tool Design Video Series, explores tolerances, allowances, gage wear and repair, primary standards like gage blocks and surface plates, and the variety of standard and high precision gaging tools used to determine if parts fall within their specified tolerances ranges.
The Standard Gagingandnbsp;and Inspection Tools segment details the various screw-pitch gages, plug gages, ring gages, and snap gages.
The High Precision Gagingandnbsp;and Inspection Tools segment examines the various types of tools and systems used to amplify or magnify dimensions for measurement, including: dial indicators, electronic digital readouts, air gaging, coordinate-measuring machines, optical projection, and vision systems.
By Gary Conner
By George N Bullen FSME