An item which by rising and descending within a gage tube indicates the level of a liquid in a reservoir.
NSN 6105-01-267-8542
NSN 5945-01-068-4471
NSN 6130-01-592-3881
NSN 5935-01-634-0668
NSN 5855-01-632-0210
NSN 7035-01-204-7481
NSN 5985-01-090-3348
NSN 6620-01-062-4307
NSN 5950-01-451-0802
NSN 6320-00-500-4172
NSN 5998-01-625-3354
NSN 2925-00-275-1807