I recognize the rolling ruler in the upper right corner, I had one years ago. I see someone else mentioned it as well. It wasn't a fancy navigation plotting ruler, it was called the rolling ruler, one of those as seen on TV things. it could draw parallel lines and circles and such.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.