Mechanical laboratory methods; the testing of instruments and machines in the mechanical engineering laboratory and in practice (1922)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 121
e taken equal to 1.55. (c) Sensitiveness. With the hook gage set at a convenientheight, start with a low level behind the weir, and graduallyincrease it until the gage is just submerged. At this instant areading of the recorder should be noted. The procedure shouldbe repeated, the hook gage… … A nozzle makes a very convenient form of velocitywater meter when the water to bemeasured may be discharged from apipe into the atmosphere. The prin-ciple upon which this meter dependsis similar to that of a weir, that for adefinite pressure behind the openingthere will be a definite flow through…
Mechanical engineering
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