The method used for measuring the rate of a particular flow is determined by the course rate of flow and by the nature of the flow channel. The ELE range therefore encompasses equipment for measuring the faster flows encountered in rivers and streams, down to the low rates occurring during run-off from field drains.
For velocities 0.04 to 5.0 metres/second. Consisting of current meter, revolution counter, wading rods, base and knob, 3 metres wading cable. ...
Consisting of current meter, revolution counter, wading rods, base and knob, 3 metres wading cable. All packed into carrying case. ...
