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 126
Fig- 35- … 104 TIN, SHEETJROX AND COPPER-PLATE WORKER. Divide the semicircle thus formed into as many equal partsas the figure is to have sides (six), and join B to the seconddivision point of the semicircle, counting from X. Thisline will be another side of the required polygon. Havingnow three points. A, B,…
Metal-work
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