Bliss Anand Sight Flow Indicators provide an effective way to view the condition of liquids or solids flowing through pipelines at most any flow, pressure, or temperature, a major advantage over electronic devices where it is difficult to distinguish if there is a flow problems or malfunction in the device. Bliss Anand Sight Flow Indicators assure a direct and positive indication of flow rate, flow direction and condition of the medium being transported plus enable a means of inspecting pipelines for dirt, scale and foreign matter.