Reminds me a bit of this[0]. I have an iOS app[1] that models its operation. Sextants[2] are damn clever devices, and have been around for about three hundred y

Reminds me a bit of this[0]. I have an iOS app[1] that models its operation. Sextants[2] are damn clever devices, and have been around for about three hundred years. Theodolites[3] are even older, but are used for terrestrial measurements. [0] https://en.wikipedia.org/wiki/Antikythera_mechanism https://en.wikipedia.org/wiki/Antikythera_mechanism [1] https://apps.apple.com/app/id989574753 https://apps.apple.com/app/id989574753 [2] https://en.wikipedia.org/wiki/Sextant https://en.wikipedia.org/wiki/Sextant [3] https://en.wikipedia.org/wiki/Theodolite https://en.wikipedia.org/wiki/Theodolite