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Parshall

noun
Par·shall | \ˈpärshəl\
variants: or Parshall flume
plural -s

Definition of Parshall 

: a device for measuring flow in conduits by observing difference of head on opposite sides of a partial obstruction

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History and Etymology for Parshall

after Ralph L. Parshall, born 1881 American civil and hydraulic engineer

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