A late 19th-century lacquered-brass compound monocular microscope,

细节
A late 19th-century lacquered-brass compound monocular microscope,
signed Carl Zeiss, Jena., No. 21478, with rack and pinion coarse and micrometer fine focusing, double nose piece, sub-stage condenser with iris diaphragm and plano-concave mirror, the horse-shoe foot in black enamel, with four objectives and two eye-pieces, in mahogany case 15¼in. (38.7cm.) high

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