Oil Quantity Indicator, 4 Tank, Liquidometer, EA-48-16 B-29 S2 Tracker up to 2000 PSI

up to 2000 PSI

and possibly others

It has "B-50" stamped on the rear case

000 ft of altitude

The procedure is changed from Take-off to Landing and vice versa by rotating the knob in the lower left

Oil Quantity Indicator, 4 Tank, Liquidometer, EA-48-16 B-29 S2 Tracker up to 2000 PSINormal 0 false false false MicrosoftInternetExplorer4 This is an authentic WWII era quad tank Oil Quantity Indicator made by Liquidometer, PN EA 48 16, as used in the US Army Air Force's Boeing B 29 Superfortress (see illustrations of B 29 Flight Engineer's instrument panel showing instrument location). Each of the four engines in a B 29 had an 80 gallon oil tank in the nacelle with a 5 gallon expansion space. The knob situated below the display on