I was collecting scientific instruments long before I ended up with a growing collection of clocks and watches. There is a crossover as clock and watchmakers were often involved in scientific instruments and famous physicists advanced the accuracy of clocks. This is one such crossover. Thos Wright was the man who originally proposed that our galaxy was a flat disc in shape, and also that those smudges he could see with early telescopes were other distant galaxies. Kepler wrongly gets the credit even though he said he got the original idea from a paper by Wright. Thomas Wright originally trained as a clockmaker, and as well as being a Physicist was a landscape gardener (landscape in the literal sense, think capability brown) This is the main workings of a waywiser that he made, the sort of instrument that would have been used setting out and mapping the large estates he designed.