細節
MAX KOHL, Chemnitz
A lacquered-brass demonstration goniometer, with twin body-tubes, prism, lenses and mirror, all in maker's fitted mahogany case -- 13in.(33cm.)wide, circa 1905; and a stand
A lacquered-brass demonstration goniometer, with twin body-tubes, prism, lenses and mirror, all in maker's fitted mahogany case -- 13in.(33cm.)wide, circa 1905; and a stand