A practical work-shop companion for tin, sheet-iron, and copper-plate workers ... with numerous valuable receipts and manipulations for every-day use in the work-shop (1904)
Blinn, Leroy J. [from old catalog] · Philadelphia, H. C. Baird & co. · leaf 39
g. 22. arc BF, also the arc DE; set off BF equal to CD, in Fig.20; draw the line EF, cutting the centre at L; draw thelines FG and EH at right angles to EL; make FG, equalto DE, in Fig. 20* draw the line HG at right angle to EH. 16 TIX SHEET-IRON AND COPPER-PLATE WORKER. Edges to be allowed. The… … Pig- 23-
Metal-work
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