Mystery Gadget 83

What's it for? The answer is here.

Or after the jump.
     Posted By: Paul - Sat Apr 25, 2020
     Category: Technology

My first thought was that it had something to do with navigation and plotting a course on a map.
Posted by Fritz on 04/25/20 at 07:26 AM
I did not think of navigation, but did believe it had something to do with survey work.
Posted by Steve E. on 04/25/20 at 11:07 AM
Astrolabe, I thought (an inclinometer). Should be good for partial credit, anyway.
Posted by Virtual in Carnate on 04/25/20 at 12:23 PM
Ah. I guessed at an angle trisector.
Posted by Richard Bos on 05/02/20 at 01:22 PM
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