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 4140-00-373-4833
NSN 5895-00-372-5493
NSN 6145-00-835-2298
NSN 6645-01-381-2050
NSN 6320-01-543-3238
NSN 5999-01-382-8139
NSN 5905-01-040-5481
NSN 7035-01-406-5232
NSN 6650-01-218-4466
NSN 5855-01-285-3483
NSN 5905-01-328-7904
NSN 5935-01-634-0668