Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 207
e working depth is in like manner found from the parallel marked 11,the thickness from that marked 7, and the width of space from thatmarked 8. 164 DKAWING OF MACHINERY. The proportions for any other given pitch comprised in the scale arefound in precisely the same way ; and if the scale be well… … 8:s 8:4 ein 7.0 7:2 K,d »jy c.o &:(i 6:2 «:a t\i AjO a:6 •i:i s;a »;& 20 is 8 isai rt2 111 uit jn 18 ]7 Mi 13 11 . ]» lu 11 10 0 8 1 4 3 It J. 11 IJ lit XL 10 ^±H]: those parallels, namely, T, U, 12, 11, 8, 7, whicli are required; the othersare not requisite, and l)y inattention may lead to…
