Standards and conventions for mechanical drawing (1921)
Kepler, Frank Roy, 1875-, Detroit (Mich.). Board of Education · [Detroit] · leaf 22
are usually made full size fromsketches and are used by the designer in working out the actionof the mechanism. 30. Partial assemblies are made to show the details of anysystem connected with the macliiue, as the lay-out of winng, andpiping. 31. Pij)ing and wiring drawings are often made in… … ^o r£:am for ^a p^wtap^r pjn / RE-QO. M.S. r. A. O.
Mechanical drawing
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