Temperature Indicator, Dual Engine, Oil or Coolant, -70 to +150d C, AN5795-6 Battle the Zero Reader can be

the Zero Reader can be compared to an auto pilot in which the human pilot replaces the servos

and illustrations of all relevant technical aspects covered for the B-26

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Here is an original WWII-era 31-page booklet on the Fundamentals of Air Fighting

Temperature Indicator, Dual Engine, Oil or Coolant, -70 to +150d C, AN5795-6 Battle the Zero Reader can beThe Army Navy Type AN5795 6 Dual Engine Oil or Coolant Temperature Indicator was used across a number of US Army Air Corps, Navy, and Air Force aircraft during WWII, including heavy bombers B 17, B 24, B 29, medium bombers B 25 and B 26, as well as light bomber A 20, according to the Accessories Interchangeability Chart dated Feb 1945. This indicator was made by Electric Auto lite, part number 10499 A, and has a serial number prefix of AF44,