Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 24
the size of pajier. Many draftsmen, how^ever, have severalboards of various sizes, as they are very convenient. The draw-ing board is usually made of soft pine, which should be well sea-soned anil straight grained. The grain should run lengthwise ofthe board, and at the two ends there should be… … DRAWIXG BOARD matched joint, nails and screws being also used. Two cleats onthe bottom extending the whole width of the board, will reducethe tendency to warp, and make the board easier to move as theyraise it from the table. Thumb Tacks. Thumb tacks are used for fastening thepaper to the drawing…
Mechanical engineering
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