The naval architect's and shipbuilder's pocket-book of formulae, rules, and tables and marine engineer's and surveyor's handy book of reference (1884)
Mackrow, Clement · London, C. Lockwood and co. · leaf 18
9. Another metlwd. (Fig. 9.) At 0, the intersection of the two dia-meters, as a centre, with a radius equal tothe difference of the semi-diameters,describe the arc a&, and from & as acentre with half the chord hca describethe arc cd ; from o as centre with thedistance od cut the diameters…
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