NavList:

Thanks Gary.  I recently purchased one of these at a great price.  It's a brilliant device, and your archived webpages were very useful for figuring out how to put it to good use.  

On a different note, does anyone on this list own the "other" Polhemus Computer (FAA-173) for calculating Celestial True Bearing?  I've only seen the pictures available on the National Air & Space Museum website.  See link below if interested:

https://airandspace.si.edu/collection-objects/computer-celestial-true-bearing-felsenthal/nasm_A19771778000