Bradbury, F. (Fred) · Halifax : F. King · leaf 280
ds y. In x ytake any point a and with A as centre and radius equalto half the diameter of the warp, describe a circlewhich shall represent the diameter of the w^arp.From the centre of circle A, draw a straight line A pperpendicular to x y and unlimited towards?, also fromthe same centre draw a… … Fig. II. In A o take a point c equal in distance to theradius of circle A from the arc M N at the point whereA o passes through m n and describe a circle such thatits circumference touches the periphery of M N. Alsofrom the centre of circle c draw two straight linesparallel to a y and a p cutting a…
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