Measurement of Ruffled Water Surface Elevation

by A. J. Raudkivi,

Serial Information: Journal of the Hydraulics Division, 1965, Vol. 91, Issue 2, Pg. 65-72

Document Type: Journal Paper


A probe is described for the measurement of the mean level of a ruffled water surface in a laboratory. In principle the instrument is a probe that measures down from a reference datum by counting increments of 0.001 in. until it makes contact with the water surface. The probe is raised and lowered by a crank, driven by a small electric motor that also drives a commutator disc. The signals from this disc are taken to a counter with decade counting tubes. The probe unit is compact and has given trouble-free service.

Subject Headings: Probe instruments | Water surface | Geodetic datum | Commute

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