An item which, by rising and descending within a gage tube in response to a rate of flow, indicates on a graduated scale the volume of flow.
NSN 6650-01-577-7010
NSN 5905-01-148-7056
NSN 5945-00-905-5749
NSN 5990-01-516-9665
NSN 5920-01-422-9616
NSN 5999-01-465-3360
NSN 6135-01-567-0739
NSN 5998-01-541-4109
NSN 6645-01-093-5015
NSN 5960-01-525-1690
NSN 5935-01-146-3062
NSN 6135-01-633-8502