[ChrisMarshallNY]

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

[1] https://apps.apple.com/app/id989574753

[2] https://en.wikipedia.org/wiki/Sextant

[3] https://en.wikipedia.org/wiki/Theodolite