NASA NTRS · 19950065601
Portable Device Measures Perpendicularity Of Threaded Hole
Abstract
Simple portable device gives quantitative information on amount by which axis of threaded hole in workpiece deviates from perpendicularity to adjacent exterior surface of workpiece. Measurements made easily in factory, shop, or field.
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Scarpelli, August R., Buttler, Daniel W.. 1995-09-01. Portable Device Measures Perpendicularity Of Threaded Hole. https://ntrs.nasa.gov/citations/19950065601
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