Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 401
39° MISCELLANEOUS DEVICES. … on a set of dials adapted to separate dial readings. 1620. WET GAS METER. —Gas entersthrough the hollow axis of the four compartmentsof the drum in a pipe, which turns up just abovethe water level and fills each compartment suc=cessively, and by its pressure causes the drum torevolve in the…
Mechanical movements
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