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 6220-01-268-1541
NSN 5925-01-211-6660
NSN 6130-00-756-4271
NSN 5910-00-350-3539
NSN 5996-00-701-5819
NSN 2925-01-569-5471
NSN 5855-00-089-3974
NSN 5925-01-640-8449
NSN 5920-01-386-8116
NSN 5895-00-420-7042
NSN 5990-01-652-7373
NSN 6105-00-979-5478