this is the most obtuse list you've ever had on here. College educated; wide-ranging general knowledge; and I still don't understand what many of them are, or what they do. Do you actually read the things you post?
This large, nautical instrument that was found at an antique sale:
"It is one of these. The page says, 'This is a World War II era direct reading reflector magnetic compass, Type 2 or 3 KAI, manufactured by Tokyo Aero Indicator Co, as used on Japanese Navy aircraft."
this is the most obtuse list you've ever had on here. College educated; wide-ranging general knowledge; and I still don't understand what many of them are, or what they do. Do you actually read the things you post?