Rotameters are devices which measure the flow rate of liquid or gas in a closed tube. This product is machined from clear acrylic block and is designed to give maximum accuracy in visibility and ruggedness. The floats are made from stainless steel, PVC and other non corrosive materials. The needle valve is provided for accurate flow control. It is designed to give accuracy of 0.5 to 1% at full scale. The higher accuracy can be made on specific requirement.