Machine drawing; a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1914)
Griffin, Charles Lewis, 1867-, Adams, Charles Clyde, 1882- joint author · Chicago, American technical society · leaf 259
he drawing will not be toscale for more than one of these pieces, but on simple pieces thisis not objectionable. The different parts can be distinguished byassigning a specific group number to those parts wanted for anyparticular machine. This group will be referred to in a generalspecification… … MACHINE DRAWING - 245 would be called for by number; these numbers in turn being givenin the dimension table, would fix the dimensions of the piece wanted.This is a method used in many drafting rooms where many similarpieces are used which can be treated in this way. PLATE J. MAIN FIELD COILS AND…
Machinery
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