細節
R. & J. BECK, London
An oxidised-brass portable microscope, No.19037, with graduated draw-tube, rack-and-pinion and fine focusing, double nosepiece, square stage, sub-stage, and plano/concave mirror, on folding tripod legs -- 10½in.(27cm.)high, in leather case
An oxidised-brass portable microscope, No.19037, with graduated draw-tube, rack-and-pinion and fine focusing, double nosepiece, square stage, sub-stage, and plano/concave mirror, on folding tripod legs -- 10½in.(27cm.)high, in leather case