John Harrison’s first "sea clock", called H1, was tested on a return voyage to Portugal in 1736. It proved to be the most accurate clock ever to go to sea, but didn't quite manage to collect the £20,000 prize offered by the British government for solving the longitude problem. H1 had many novel features. A system of swinging balances and springs prevented the ship's motion affecting its workings, and it never needed lubricating.
19th C. Parisian Brass Telescope | Reproduced from a 19th-century original by a Parisian manufacturer of telescopes, microscopes and lenses, this telescope is a perfect blend of technology and historical design. Resting on the vintage-inspired tripod base is a powerful lens with 12x magnification and an antiqued finish that recalls the original. ($2995)