An item which by rising and descending within a gage tube indicates the level of a liquid in a reservoir.
NSN 6645-00-072-1909
NSN 6685-01-044-5044
NSN 5999-01-050-2459
NSN 5960-00-180-0805
NSN 5950-00-930-2756
NSN 5985-00-829-1953
NSN 5895-01-147-2931
NSN 2925-00-912-3993
NSN 5998-00-538-0690
NSN 6645-00-160-0503
NSN 6110-01-567-1652
NSN 6150-01-290-8781