Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 68
ted in cubic feet of airpassed per minute. 171/. ANEMOMETER formeasuring the velocity of the wind.The dial indexes are geared bytenths, as 1, 10, 100, 1,000 miles,which by differentiating the timegives the velocity of the wind inmiles per hour. The ratio of thewind velocity to the center of thecup… … 172. STEVENS BOILER.—An early type of tubular boilers(1806), The principle is still in use- and setting. equals boiler horse-power 173. PLAIN CYLIN»DRICALBOILERS, showing ^ suspension One-half the surface of the shells, divided by 10,
Mechanical movements
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