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An odometre for underwater transects
Authors:Timothy A Mousseau
Institution:(1) Department of Entomology, University of California, 95616 Davis, CA, USA
Abstract:A simple device for the measurement of length (or area) along an underwater transect is described. This instrument is pushed or pulled by SCUBA divers along lake or river bottoms and the rotation of a paddle wheel is recorded on a digital counter. The device eliminates the need for straight line and smooth bottom transects, and allows for greater versatility than that provided by the more usual rope line transect.
Keywords:methodology  apparatus  transects  SCUBA
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