A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 87
Fig. 85 … Fie. 86 MECHANICAL DRAWING 85 block has iwo ^-inch bolts, one on each side of thestrap. This makes six bolts in all. The hole on theend of the strap is for oil. Copy in Gothic slant lettersthe stock list. Fig. 89.
Mechanical drawing
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