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
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. … To draw an Ellipse witli the Rule and Compasses, ttic OVAL. 53 transverse and coiijugate Diameters beinggive?i; that is, theLength and Width.—Let AB (Fig. m) be the transverseor longest diameter; CD the conjugate or shortest diam.eter, and O the point of their intersection—that is, thecentre ot the…
Metal-work
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