[pritch]

WOW! I have (maybe still) one of those parts, the little device in the last picture. I never could figure out what it was. I always thought it was some kind of surveying tool, but every surveyor I worked around had never seen one. Last time I saw mine, my grandkids were playing with it. I do have the case (what's left of it) and some directions:









I'll have to look around and see if I can find the actual tool.