Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 57
tes and the hand-reel. The kites weigh from two to three ounces per square foot of lifting surface which, in a twenty-five-mile wind, exerts a pull of about one pound on the line. The meteorograph is hung between two kites and other kites are attached to the wire at intervals so that its angle… … Fig. 3. graph. A measuring device registers the length of wire uncoiled, and from this and from the angular elevation of the meteorograph, its vertical height is computed, after making allowance for the sag of the wire, which amounts to about two per cent, of its length. When the meteorograph is…
Engineering
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