Spencer Browning and Co, London, a 19th century mahogany marine barometer: the bone dials aslant having typical barometer markings with a vernier scale set from below and signed within the arch by the maker Spencer Browing & Co, London, the mahogany curved top case having a brass cistern to the base and brass bound holes for fixing to a gymbal, height 94cms.* Notes Spencer, Browning & Co are recorded as working at 327, Wapping, London in circa 1783 and then 66, Wapping from circa 1801 until at least 1838. Also known as Spencer & Co, and Spencer, Browing & Rust.