Antikythera
The idea was born one autumn night on a cliff high above Ithilien, friends sharing warm spiced wine as stars wheeled overhead. Faramir and Legolas devised the mathematics,while Gimli spent years tinkering with the design. When he was finally satisfied, his kin forged the cogs and wheels to a precision approaching perfection.
The finished device, austere and elegant, was gifted to the peoples of Middle-earth, accepted on their behalf by the King Elessar. His son Eldarion was particularly fascinated. In his time he set it high in Ecthelion’s tower, where he spent endless hours, asking questions of the stars.
For the "Tinker" challenge. My search for “clockwork” led me here.