Oxygen Indicator, USSR, Oxygen Indicator IK-24N (ик-24н) Martin the aircraft was traveling at

the aircraft was traveling at 820 km/h

An accelerometer with an identical face appears in the Oct 1950 flight manual of the Boeing B-47 A Stratojet Bomber (see photo)

Oil Pressure

5 inches across and ~7 inches deep

The indicator measure and conveys the system oxygen pressure (i

Oxygen Indicator, USSR, Oxygen Indicator IK-24N (ик-24н) Martin the aircraft was traveling atThis is a fine example of a Cold War era, Soviet, Oxygen System Indicator as used in the USSR Air Force aircraft. The indicator measure and conveys the system oxygen pressure (i. e., quantity) up to 150 kilograms square centimeter, via the pointer in the upper half of the display. The indicator also provides visual indicator of oxygen flow similar to the WWII era "blinker" device: as the pilot inhales exhales, the two white 'eyelids' below center