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 6240-01-120-7594
NSN 5985-00-271-9502
NSN 5998-01-013-1260
NSN 6610-00-947-7595
NSN 5960-01-301-3315
NSN 6610-01-568-4023
NSN 7035-00-312-3055
NSN 6650-01-066-0420
NSN 5975-01-164-1157
NSN 5975-00-147-4791
NSN 5985-00-151-3981
NSN 6620-01-611-7907