Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 239
METER OF MR. E. DUBOYS. Mr. E. Duboys, of Paris, exhibits a form of water meter which, for its simplicity and thenecessary accura-cy of its measure-ments, must bewell adapted tothose cases inwhich great ra-pidity of flow isnot important. Itis also especiallysuited to the mea-surement of waterunder… … DUBOYSS WATER METER. 223 Fiff. 70.
Machinery · Scientific apparatus and instruments
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