Just curious - what use does a company have for so many of these. The "astro compass" I am familiar with is the military version used in aircraft for finding true north. It is essentially a heliochronometer on which one can set latitude, declination and hour angle of the sun. Then the device is turned to align with the sun to get true north.
Is this device still used? Military surplus seems the best place to look. However, some scientific educational supply houses may have similar items of about the same accuracy. Claude Hartman Arroyo Grande, CA 35N 120W Al Schoepp wrote: > I thought somebody here might be able to help. The company I work for > is currently looking for astro compasses. The ones we currently use are > marked: > > W. W. Boer Co > part number is XCD-94 > > We currently have about 15 of them but they are getting old so some need > repair and they also must be somewhat collectable. Every year 1 or 2 > seem to go missing. > > Any help would be appreciated. > Al
