A late 19th-Century 'Van Heurck' model lacquered-brass and black enamel compound monocular microscope, by WATSON & SONS 313 HIGH HOLBORN LONDON No.6052, with rack and pinion coarse and draw-tube focusing and micrometer fine adjustment, fully adjustable mechanical sliding stage and sub-stage condenser with plano-concave sub-stage mirror, with six various objectives in brass canisters, contained in the original mahogany box -- 145/8in. (37.2cm.) high ; a 19th-Century brass compound monocular microscope by E. Leitz Wetzlar No.155906 with rack and pinion coarse focusing and micrometer fine adjustment, double nose-piece, fixed stage and plano-concave sub-stage mirror, in original pine carrying case -- 12¾in. (32.4cm.) high ; and a lacquered-brass and black enamelled ADVANCED STUDENT'S compound monocular microscope, by J. SWIFT & SON LONDON, with rack and pinion coarse focusing and micrometer fine adjustment, radial stage with sub-stage condenser and mirror, with spare iris diaphragm and second objective lens, in original fitted mahogany case -- 15in. (38.1cm.) wide (3)
A late 19th-Century 'Van Heurck' model lacquered-brass and black enamel compound monocular microscope, by WATSON & SONS 313 HIGH HOLBORN LONDON No.6052, with rack and pinion coarse and draw-tube focusing and micrometer fine adjustment, fully adjustable mechanical sliding stage and sub-stage condenser with plano-concave sub-stage mirror, with six various objectives in brass canisters, contained in the original mahogany box -- 145/8in. (37.2cm.) high ; a 19th-Century brass compound monocular microscope by E. Leitz Wetzlar No.155906 with rack and pinion coarse focusing and micrometer fine adjustment, double nose-piece, fixed stage and plano-concave sub-stage mirror, in original pine carrying case -- 12¾in. (32.4cm.) high ; and a lacquered-brass and black enamelled ADVANCED STUDENT'S compound monocular microscope, by J. SWIFT & SON LONDON, with rack and pinion coarse focusing and micrometer fine adjustment, radial stage with sub-stage condenser and mirror, with spare iris diaphragm and second objective lens, in original fitted mahogany case -- 15in. (38.1cm.) wide (3)
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