Flowmeter, instantaneous indicator. Most suitable for measuring and indicating the flow rates of lubricating oils as well as for giving warning signals. Because the indicator is protected by a mechanical seal, this is best suited for measuring opaque liquids. It can be fitted in any position regardless of the flow direction of the liquid to be measured. contact position is changeable. Depending on the places it is used, the SF flowmeter of vibration-proof type is recommendable. Please specify the diameter in the range of 3/8B - 2B.