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 6650-01-244-1573
NSN 6145-01-422-4371
NSN 6320-01-295-9992
NSN 6105-01-426-5616
NSN 6685-01-339-9279
NSN 5996-01-398-0037
NSN 5999-01-323-6942
NSN 5930-01-250-0412
NSN 5990-01-571-7468
NSN 5910-00-366-0095
NSN 5920-01-068-3135
NSN 2925-00-111-4097