Fry, Horace Pugh. [from old catalog] · Philadelphia · leaf 46
ODS OF DRA.WING TRUE IAND APPROXIMATE E.LUP5ES IF THE LEr4GTH5 OF AXES ARE OIVENJ Fig. 34. the diameter points D parallel to the diameter lines, a line throughtheir intersections L and L will determine the direction of themajor axis of tl\e ellipse and one through S and S the direction ofthe minor… … /50METRIC PROJECT\ONOF A CIRCL.E D
Mechanical drawing
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