Details
An early 19th-Century Irish brass pocket compass and sundial,
signed T. & J. Mason DUBLIN, the folding gnomon with scroll support, the silvered dial with iron needle and agate cap, with cover -- 3in. (7.6cm.) dia.
See Illustration
signed T. & J. Mason DUBLIN, the folding gnomon with scroll support, the silvered dial with iron needle and agate cap, with cover -- 3in. (7.6cm.) dia.
See Illustration
Further details
For further recorded instruments by this maker see CHARLES MOLLAN: Irish National Inventory of Historic Scientific Instruments 1990