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Rhoda 5 month s ago
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 tiny, colorful dial with a wheel at the bottom:
"It's called an opisometer. The picture on the Wikipedia page looks very similar to yours."
"It is a wheel you put on a map to find the distance on the road. Different scales for different map sizes. You trace the route for the distance."