Altimeter, Civilian Cessna Czech The A-5 Automatic Pilot was

The A-5 Automatic Pilot was used primarily in WWII-era bomber aircraft of the Air Corps US Army such as the Consolidated B-24 Liberator (see photo showing the location of the panel in the B-24 cockpit)

By rotating this lens to align North with the compass pointer below

the pilot or co-pilot 'feathered' the propellor of the stricken engine

Measures ~9 inches tall

This WWII-era MN-52H Control Unit

Altimeter, Civilian Cessna Czech The A-5 Automatic Pilot wasThis is a civilian altimeter marked for use in a Cessna aircraft. It is date stamped November 1959. The knob is used to adjust the altimeter to the barometric pressure is displayed in the small window at the 3 o'clock position. The glass and case are intact, and the knob rotates, and the pointers move. Measures 3. 25 inches diameter and ~4 inches deep.