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Lines, , , , General applications, See figure and other relevant figure, , , , Figt, , , , 6, , , , , , , , Continuous thick, , Continuous thin, (straight), , Continuous thin, free hand, , Continuous thin, (Straight) with zig-zags, , Dashed thick, , Dashed thin, , Chain thin, , Chain thin, thick at ends, & changes of direction, , Chain thick, , Chain thin doubledashed, , , , At, A2, , Bt, B2, B3, B4, BS, Be, 87, Bs, Bo, , ct, , Visible outlines, , Visible edges, , Imaginary lines of intersection, Dimensionlines, , projection lines or extension line, Leader lines, , Hatching, , Outlines of revolved sections in place, Short centre lines, , Thread line, , Diagonal ine, , Limits of partial or interrupted views &, sections, ifthe limit is not a chain thin, , DI Line (See figures), , a1, £2, FA, F2, , a, G2, Gs, , Ht, , Hidden outlines, Hidden edges, Hidden outlines, Hidden edges, , Centre lines, Lines of symmetry, Trajectories, Cutting planes, , J Indication of ines or surfaces to, ‘which a special requirement applies, Outlines of adjacent parts, Alternative and extreme positions of, movable parts, , Centroidal lines, , Initial outlines prior to forming, , Parts situated in front ofthe cutting plane, , , , , , 1. This type of line is suited for production of drawings by machines., 2. Although two alternatives are available, itis recommended that on any one drawing, only one type of line be used.