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 71
raw the line AB ;draw the lines AF and BE at right angle to AB; drawthe line DE parallel to AB; make DF equal to AB,and draw the line FE; divide the semicircle into anynumber of equnl parts; from the points draw lines parallel 48 TIN, SHEET-IRON AND COPPER-PLATE WORKER. to AF, as I, 2, 3, etc.,… … D Fig. 58. A 10 8 87 65432 I b Fg 59- circle j from tlie points draw lines parallel to BD, as i, 2,3, etc., make BD equal in length to AF (Fig. 58), and ACequal in length to BE; also, each of the parallel linesbearing the same figure, as i, 2, 3, etc.; then a line tracedthrough the points will form…
Metal-work
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