The wind indicator (anemoscope) of Timosthenes

Previous exhibit                                                                                                                   Next exhibit

EXHIBITS    >    Measuring instruments, tools and machines of the ancient Greeks    >   

The wind indicator (anemoscope) of Timosthenes


It was a simple nautical instrument used to orientate the navigation. It consisted of a disc with radius which indicated the direction of the twelve winds (Aparctias, Boreas, Kaikias, Apeliotes, Euros, Euronotos, Notos, Libonotos, Lips, Zephyros, Argestes, Thrascias). It is most likely that the centre had a rotating vane (strip, statuette, Triton, etc) and at its circumference it had twelve oblique pegs as on the later anemoscope of Eftropiou.

SOURCES: "Ptolemy, The Great Syntaxis of Astronomy (Almagest)", "Archimedes, Psammitis"