Fry, Horace Pugh. [from old catalog] · Philadelphia · leaf 24
. (SeeFig. 19.) 8. Fractions must always have the dividing line made thus:I, never ^, the figures in the numerator and denominator should,for clearness, be ^ high the same as the whole number (see Fig. 18)and should not touch the line. 9. Inch and foot marks should be made neat and distinct(see… … SA/otfo^ca/er Fig 19. —^/z ^ be placed outside the views wherever clearness is gained thereby,using extension lines between which the dimensions are given.Dimension the views in blank before entering the dimension fig-ures; that is, draw all extension lines, dimension lines and arrowheads first.…
Mechanical drawing
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