Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 184
g, unbleached muslin will do—the kind madeespecially for aeroplanes is best. Both upper and lower surfaces must be stretchedtaut, the edges front and back being turned over thepiano wire, and the wire hemmed in. The upperand lower surfaces are then sewed together— through and through, as a… … (/50/.C) 1Sectional diagram of 2-cylinder Darracq opposed motor.
Aeronautics
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