A meter in which the measuring element is a multiblade rotor that rotates with a velocity proportional to the mean velocity of the fluid stream. Measured volume is registered by counting the rotor revolutions
EESiFlo North America, Terminology and Glossary: Maritime Terms, Pennsylvania, USA 2002, flowmeterdirectory.com/flowmeter_terminology. (Mrtm/ Ports and Ships - Amer) {539}