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 5925-00-760-2622
NSN 6620-01-028-0504
NSN 6320-01-631-7828
NSN 5920-01-470-5835
NSN 2925-01-290-8208
NSN 5999-01-401-5322
NSN 5920-01-225-0440
NSN 2925-01-302-1428
NSN 6650-00-701-8081
NSN 2925-01-311-7840
NSN 6145-01-512-8688
NSN 5910-01-112-4786