Star Control Assembly Short Sunderland Two inner dials labeled Magnetic

Two inner dials labeled Magnetic Course or Bearing and Compass Course or Bearing rotate within the outer ring labeled True Course or Bearing

evidence of a year of manufacture of 1949

This manual instructs student bombardiers on the calibration procedures for the aircraft instruments upon which he will rely to effectively perform his duties

Given their age

Type 98 as made by Yanagi

Star Control Assembly Short Sunderland Two inner dials labeled MagneticThis 2 piece device is thought to be part of the MD 1 Astro Navigation System used in early B 52 bombers, but we cannot confirm this. It consists of a sighting mechanism that includes a mirrored lens, and a cover which probably affixed to another housing assembly. Measures ~ 11 inches x 5 inches. Knowledgeable visitors are invited to email additional information.