the astrolabe is one of the earliest technological devices, being a multi use tool, which was basically an early clock, compass, and telescope combined into one, allowing you to look at the stars, it was a marriage or combination of the planisphere, a star chart analog computing device, and the dioptra, a tube which was used a scoping device and basically an ancient spyglass.
the astrolabe was made in 120 BCE-1600CE
the astrolabe was made of Brass