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The Use of Instruments
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American Standard American Standards Association angle assembly drawing auxiliary view axes bill of material blue print bolts center line chapter chart circle arcs cone construction contour curve cutting plane cylinder detail drawings diagram diameter dimension lines distance divided draftsman drawn edge ellipse engineering Figure finished front view gear give given head height holes horizontal lines illustrated in Fig inch inclined intersection isometric isometric projection letters machine measuring method necessary object oblique oblique projection orthographic projection paper parallel pencil perpendicular perspective pictorial picture plane piece pipe pitch plate position practice prism problems radius revolved rivets scale screw screw threads set screw shaft shape sheet shown in Fig side views sketch space square steel stroke structure surface symbols T-square tangent taper thickness thread tion top view tracing triangle true length usually vanishing point vertical lines width