Survey device - string to knobs for precision?
Knotted string heald in mouth to calibrate the sighting through the different hole apertures?
Isnt there something similar for old sexton?
Not really obvious to me how the view through the pairs works. I don't know if it measures 10ft or 100 meters, or miles.
Any record of the dodecahedron found with engineers or scientists?
u/bartork — 3 days ago