Inline Flow Rate Indicator is used for installation in any plain and to operate at very high pressures, even with opaque liquids operating on temperature ranging up to 90° C. The Indicator works on a varied pressure range from 1Bar to 300Bar and is unbreakable as it comes in metal construction. The Indicator has been calibrated separately for oil, water and air and ensures accurate measurement of flow rate. Inline Flow Rate Indicator is easy to maintain and offers long functional life.