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Use and Care of Instruments
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angle auxiliary plane auxiliary view axis axonometric axonometric projection base beam bolt cast Cavalier projection center line chart circle cone construction contour contour lines curve cutting plane cylinder detail diameter dimetric distance draftsman drawing drawn drill edge edgewise view ellipse engineer's scale engineering equal equation face Figure front view gage give given graphical hole horizontal line illustrated in Fig inches isometric layout letters located machine metal method necessary noted object oblique oblique projection obtained orthographic pencil perspective picture plane pipe placed plane of projection plotted point of sight position problems projecting lines radius reference line rivet scale screw screw thread Shaft shape sheet shown in Fig side sketch slope space specified square standard steel straight line surface symbols T-square tangent thickness thread tion tolerance top view triangle trimetric projection true length usually vanishing points vector vertical line welding