Hi-Tech Accessories' portable water velocity meter offers the convenience of measuring the flow in open channels and partially filled pipes. The flow probe incorporates the turbo-prop propeller sensor for velocity sensing. The handle is telescopic and is expandable up to 15' in length. The instrument has a range from 0.3 - 25 f/s (0.1-8 m/s), with an accuracy of 0.1 f/s. Other features include: a large LCD display, averaging facillty stop watch function, and push button operation. The flow probe can be used to measure flow in storm water drains, rivers, ditches, flumes, sewers, effluents, canals, creeks, and process controls.