Airspeed Analytical Instrument, Luftwaffe ME-109 With 11 sections plus appendix

With 11 sections plus appendix and index

"Armament & Fields of Fire

and UH-1 Bell Huey

and F6F-5N

uncages the compass card which would then rotate right or left

Airspeed Analytical Instrument, Luftwaffe ME-109 With 11 sections plus appendixThis interesting device appears to be a WWII era or post war Airspeed Analytical Instrument. Likely a bench instrument and not used in flight. On the rear of the cabinet is a static pressure port, which leads to a bellows inside of the device, which is further connected to the internal mechanical apparatus of the instrument. A lever responds to the differential pressure applied to the device, which then rotates the pointer on the display. An airspeed