£ 4850 $ 5796 | € 5671 A rare angle or 'sign post' double stick barometer. A mahogany case with chequered banded inlays and parquetry. Twin vernier scale adjusters to the end of the scale and shown by small brass loops on the dial. Twin mercury tubes to the very finely engraved silvered scales. Circa 1810.Charles Aiano of London and Can...