拍品 109
109
A mid 19th Century oxidised brass French quintent indistinctly signed on the arc E. Seviron a Paris No. 1093, with silvered scale, adjustable telescope mounting socket, seven shades, the index arm -- 7 3/8in. (18.8cm.) radius, with vernier, magnifier, shade, tangent screw, fine adjustment with clamp, with mahogany handle, three telescopes, label for Poitevin G. Duault in mahogany case -- 10¼in. (26cm.) wide

細節
A mid 19th Century oxidised brass French quintent indistinctly signed on the arc E. Seviron a Paris No. 1093, with silvered scale, adjustable telescope mounting socket, seven shades, the index arm -- 7 3/8in. (18.8cm.) radius, with vernier, magnifier, shade, tangent screw, fine adjustment with clamp, with mahogany handle, three telescopes, label for Poitevin G. Duault in mahogany case -- 10¼in. (26cm.) wide