An unusual French equinoctial inclining dial, signed on the reverse Solomons & Co. Calcutta, with silvered hour ring and latitude arc, with spring loaded gnomon, the horizontal dial inscribed with the latitudes of Yedo 35°, Canton 23°, Calcutta 22°, Bombay 19°,Pekin 40°, with twin bubble levels, on three levelling screws, in fitted velvet lined mahogany case - 6½in.wide