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A practical workshop companion for tin, sheet iron and copper plate workers : containing rules for describing various kinds of patterns used by tin, sheet iron and copper plate workers : practical geometry, mensuration of surfaces and solids, tables of the weights of metals, lead pipe, etc., tables of areas and circumferences of circles : japans, varnishes, lackers, cements, compositions, etc., etc., etc. (1876)

Blinn, Leroy J · Philadelphia : Henry Carey Baird & Co. · leaf 84

An illustration from A practical workshop companion for tin, sheet iron and copper plate workers : containing rules for describing various kinds of patterns used by tin, sheet iron and copper plate workers : practical geometry, mensuration of surfaces and solids, tables of the weights of metals, lead pipe, etc., tables of areas and circumferences of circles : japans, varnishes, lackers, cements, compositions, etc., etc., etc., 1876, leaf 84
* 3 inh\ hfeint «^ FOR DESCRIBING PATTERNS. 15 BOILER COVER. To describe an Oval Boiler Cover. … Eie;t the line DC; make FD equal to oue-half the lengta ofthe boiler bottom before the edge is turned; describe the circleIIDI one-eight of an inch larger in diameter than the breadth ofthe bottom; let FG be three-eights of an inch; then apply thecorner of the square on the line AB, allowing the…

Metal-work · Workshop recipes

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