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 115
on the line AC, 92 TIN SHEET-IEON AND COPPER-PLATE WORKER. and set off three times the distance on the outer circle, asfrom A to B ; draw tiie lines AC and BC, cutting the centreat C. Edges to be allowed. OVAL. To describe an Ellipse or Oval, having tJie Tivo Diam-eters given.— On the intersection… … Fig lio.CD; from E as a centre with the distance ED cut thediameters at FF and DD ; draw the lines FO, FO, FO, FO ;then from F and F as centres, describe the arcs 00 and00 ; also, from D and D as centres, describe the smaller arcs00 and 00, which will complete the ellipse as required.
Metal-work
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