The paper attempts to bring together some of the modern techniques of low flow measurement scattered in various technical journals. Some of the techniques presented in detail are the Schmidt’s nozzle, the quadrant-edge orifice, the rotameter, the tri-flat tube, the variable orifice-flow tneter and the mass flow meter. In each case the principle is noted, design and construction details are presented, range of flow, accuracy and limitations of the technique are pointed out. It is hoped that this paper will be of immense use in picking up a suitable technique for the particular problem of metering on hand.
