Temperature Indicator, Dual Engine, Oil or Coolant, -70 to +150d C, AN5795-6 F-14 as long as you "Handle

as long as you "Handle Like Eggs"

This is a nice example of the US Navy's Vertical Speed Indicator R-88-I-750 as used in the SB2C Helldiver Dive Bomber of WWII

The small lamps is present but its operability is unknown

which could be opened and cleaned if desired

The lid contains a calculator for speed

Temperature Indicator, Dual Engine, Oil or Coolant, -70 to +150d C, AN5795-6 F-14 as long as you "HandleThe 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 Edison, part number 33203, and has a serial number prefix of AF43, indicative of a 1943