Fitzer instruments [india] pvt ltd is engaged in manufacturing a wide range of pressure, flow and level measuring instruments. As part of that, the company offers glass tube type rotameters model fitzer/gtr/150. These glass tube type rotameters are general purpose, direct reading and relatively simple instruments. These are suitable for applications where a reliable sensitive repeatable indication of instantaneous flow rate is required for process control. These are equipped with a vertically mounted, tapered, calibrated glass tube with a float inside it. They find application in modern chemical and allied industries, pilot plants & laboratories. These are offered in different sizes from ½ inch to 3 inch nb.