Leeds, Charles Carley, 1870- [from old catalog] · New York, D. Van Nostrand company · leaf 44
lwa)s employed to indicate a break in a round piece of metal. LESSON.—Make a half-size drawing of the coupling. The sizes of keys may be obtained from the Bill of Material. WHien laying out the Bill of Material, use great care with lettersand figures, as this information must be accurate and should…
Mechanical drawing
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