Blessing, George F. (George Frederick), 1875-1921, Darling, Lewis A. (Lewis Andrew) · New York, J. Wiley & sons; [etc., etc.] · leaf 51
pon to divide this space, representing 3 inches, into stUl smaller divisions. To use the scale in mark-ing off a distance, apply it tothe drawing so that it lies fiaton the surface (see Fig. 32)and in a position to receive Fig. 32. - Using the Scale. ^^^ ^^^^ j^gj^^ pOSsiblc OU the division marks… … DRAWING INSTRUMENTS AND MATERIALS 31 Care must be taken not to injure the sharpness of the edge ofthe scale or the division marks and numerals. Measurements should ordinarily be taken directly from thescale and not transferred from the scale to the drawing by meansof a pair of dividers, especially…
Mechanical drawing
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