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 6240-00-271-5995
NSN 6620-00-689-4456
NSN 5985-01-062-1636
NSN 5965-01-075-3148
NSN 6135-01-111-1495
NSN 5996-01-359-9931
NSN 5920-00-144-2535
NSN 5960-01-544-1273
NSN 5960-01-204-5820
NSN 5835-00-289-9080
NSN 6645-00-515-6148
NSN 6105-01-339-3564