Hands-free measuring instrument
作者： Louis A. Norelli
DOI:
关键词: Perpendicular 、 Base (geometry) 、 Engineering 、 Ruler 、 Measuring instrument 、 Hands free 、 Engineering drawing
摘要: A hands-free measuring instrument is disclosed. The disclosed includes an upright member extending perpendicularly from a base member. At least one magnet affixed to the facilitate mounting thereof on ferrous workpiece. at level disposed thereupon. Graduations may be provided measurement of linear distances. Embodiments are wherein adjustable ruler arm and inscribing arbitrary angles relative
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