Metal Tube Rotameters are Variable Area type Flow meters designed to measure flow rate of liquids, gases & steam under critical operating conditions where conventional Glass Tube and Acrylic Body Flow meters can not be used. It consists of a tapered metal tube, an indicating assembly and a float. A magnet is encapsuled in a float with rotating magnets connected to an indicating pointer, thus the movement of the float is accurately indicated in terms of flowrate.