A brass horizontal, octagonal 'Butterfield-type' dial signed Butterfield AParis, the obverse engraved with hour scales for latitudes 43°, 46°, 49° and 52°, with inset compass and blued needle, with spring loaded bird gnomon engraved with a degree scale for latitude 40°-60°, the reverse with the latitudes of twenty-eight continental cities and towns, c.1700 - 2½in.(6.5cm); in later fitted dug out case