Fry, Horace Pugh. [from old catalog] · Philadelphia [The John C. Winston co.] · leaf 12
called for in any Department work, when trimmed, mustbe of one of the sizes shown in Fig. 7, unless specific orders to thecontrary are given. Each tracing must have on the long margin,in the low^er right and inverted in the upper left-hand comer, theletter indicating the size of sheet and the… … 234 SHEET SIZE W L A 20 28 B 14 20 E 10 14
Mechanical drawing
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