The end item is forrestal class cv
An item designed to be attached to the liquid chamber of an indicator, sight, liquid permitting the visual examination of the amount of liquid in a reservoir, pipe or the like.
Classification: Instruments and apparatus for measuring or checking the flow or level of liquids, nesoi
NSN 6240-01-432-5107
NSN 5996-01-007-8093
NSN 5895-01-504-1961
NSN 6650-01-258-6939
NSN 5855-01-131-9336
NSN 6130-01-289-4084
NSN 6150-01-109-5912
NSN 5950-01-082-2266
NSN 7035-01-479-1840
NSN 5945-00-811-7379
NSN 7035-00-782-7046
NSN 5905-01-231-6776