Astro Compass
The Navigator’s Information File has a description of the Astro Compass (or Astrocompass) . This device was used by navigators to determine the true heading of the airplane, to steer a true heading, to identify a star, or as a pelorus, a device without magnetic needles used to read bearings.
It is unclear to me if, or how often, this device was actually used. I ran across an Astro Compass while visiting the United States Air Force Armament Museum at Eglin Air Force Base, near Fort Walton Beach, Florida.