Astm d2146, type i-11001; black
An item which by rising and descending within a gage tube indicates the level of a liquid in a reservoir.
NSN 5996-01-153-9543
NSN 2925-00-149-0760
NSN 6650-00-932-1144
NSN 5855-01-466-5353
NSN 5965-01-200-6613
NSN 6145-00-517-6666
NSN 2925-01-116-6838
NSN 5985-01-149-7253
NSN 5945-01-322-5561
NSN 6220-00-761-9520
NSN 5965-01-262-9608
NSN 2925-01-617-6302