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 6135-01-533-8196
NSN 2925-01-593-2542
NSN 6240-01-455-4520
NSN 6645-00-244-0359
NSN 6620-01-580-0883
NSN 5930-01-479-9519
NSN 6650-01-383-2163
NSN 7035-01-641-1123
NSN 5915-01-621-6217
NSN 5855-00-055-1579
NSN 4140-00-529-7463
NSN 5950-01-309-0849