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The Work SurfaceDrafting ToolsTaking Care of Your
The Meaning of Lines
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arrowheads auxiliary view blade center lines center point circumference compass corner cube cutting plane line cylinder dashed lines diameter dimension lines dividers Drafting tool draftsmen draw a line drawing board drawing in Fig drawn in isometric ellipse erasing extension lines Figure French curve front plane front view graph paper graphic projection hidden lines hole horizontal line illustrated in Fig inch indicate ink lines intersection isometric circle isometric drawing isometric projection legs letters look measurements method needle point Note oblique drawing oblique projection original drawing orthographic projection orthographic views parallel pencil lines perpendicular phototracing plane of projection produce projection lines projectors protractor radius right angles right side views rotate ruling pen scale shape sheet shown in Fig shows sions slant surface solid straight line straightedge symbols T-square technique thickness three views top view tracing paper triangle true dimensions try drawing vertical lines visible lines