Temperature Indicator, Dual Engine, Oil or Coolant, -70 to +150d C, AN5795-6 Battle Here is an original WWII-era

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

The glass and case are intact and the lettering is clear and precise

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

indicating supercharger pressure from -7 to 16 PSI

a "Y" on the bottom of the temperature scale moves left or right

Temperature Indicator, Dual Engine, Oil or Coolant, -70 to +150d C, AN5795-6 Battle Here is an original WWII-eraThe 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,