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 6130-00-578-0869
NSN 5950-01-357-5072
NSN 5935-00-855-4318
NSN 6135-01-416-3181
NSN 6645-00-912-6245
NSN 6320-01-352-8084
NSN 5855-01-383-6558
NSN 5905-00-594-8102
NSN 7035-00-142-9076
NSN 5925-01-455-6400
NSN 5935-00-272-7035
NSN 5930-01-326-0698