Leonard, Robert J. (Robert Josselyn), 1885-1929, Berkeley (Calif.). Board of Education · [Berkeley, Cal.] Printed by order of the Board of Education, Berkeley Reporter, printers · leaf 14
Fi^- 9. … rig- /o. F10./Z. Fig. //■ Fig 8.2?. 14 Cardboard Construction In figure 9, as above stated, curves have been used informing the design. Note how they are constructed. Thecurve designated by the points c d is not a semi-circle, buta segment of a circle produced by locating the center on apoint on…
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