细节
A brass sundial plate
by Negretti & Zambra, London, further signed in the centre F. Barker & Son, London, with engraved hour scale and compass -- 14in.(36cm.)diam.(lacks gnomon)
by Negretti & Zambra, London, further signed in the centre F. Barker & Son, London, with engraved hour scale and compass -- 14in.(36cm.)diam.(lacks gnomon)