... of drawings and tracings, and widths of tracing cloth and paper2 Position of drawing number, date and name3 Indication of scale4 Method of projection5 Types of line and writing6 Colour of ... in 1973 on the first edition of Manual of Engineering Drawing.Every article used in our day-to-day lives will probablyhave been produced as a result of solutions to a sequence of operations ... organization of manyaspects of work and in CAD, these include the use of layers, the groupings of the various sections of CAD organization and applications 17construction designs, use of colours...