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 62
Fg 49 mencing at A, set off on it the distances into which the curveAC (Fig. 48) is divided—(measuring on the curve, not onthe springing line)—namely, the distances A, ab c, etc.At the points on the straight line thus marked, draw … g- 50- perpendiculars; make the middle one equal to 6// thoseon ^^equal to 5 e ; those on ^^ equal to ^d; those ow c c 40 TIN, SHEET-IRON AND COPPER-PLATE WORKER. equal to 3 r/ those on b b equal to 2 b, and those on a aequal to \ a. Join the extremities of these perpendicularSj and thecurves…
Metal-work
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