拍品 250
250
A lacquered brass 'No.1' monocular microscope signed Powell & Lealand 170 Euston Road LONDON 1895, with Wenham binocular body tube attachment, prism cover, monocular body tube with eyepiece rack and pinion focusing, double nosepiece, limb with micrometer fine focusing screw, main rack and pinion focusing with rectangular rackwork, concentric rotating stage stage with fishplate, divided 0°-180°-0°, mechanical sub-stage and condenser with rotating and concentric movement, plano-concave mirror on double jointed swivel arm - 16¼in high, with accessories including micrometer eyepiece, two cased Wenham prisms, one signed Powell & Lealand No.272 Patent 2"oil immersion N.A.15 London " 1/8" ½" ¼" 1" 2" 4", tommy bar, Polarizer and annalyser, acjustable illuminator, large bulls-eye on stand, a cased micrometer slide signed Powell and Lealand, and a burr wood cased Powells ¾inch illuminator and auxilliary stage in fitted mahogany case - 19¼in(85cm)high

細節
A lacquered brass 'No.1' monocular microscope signed Powell & Lealand 170 Euston Road LONDON 1895, with Wenham binocular body tube attachment, prism cover, monocular body tube with eyepiece rack and pinion focusing, double nosepiece, limb with micrometer fine focusing screw, main rack and pinion focusing with rectangular rackwork, concentric rotating stage stage with fishplate, divided 0°-180°-0°, mechanical sub-stage and condenser with rotating and concentric movement, plano-concave mirror on double jointed swivel arm - 16¼in high, with accessories including micrometer eyepiece, two cased Wenham prisms, one signed Powell & Lealand No.272 Patent 2"oil immersion N.A.15 London " 1/8" ½" ¼" 1" 2" 4", tommy bar, Polarizer and annalyser, acjustable illuminator, large bulls-eye on stand, a cased micrometer slide signed Powell and Lealand, and a burr wood cased Powells ¾inch illuminator and auxilliary stage in fitted mahogany case - 19¼in(85cm)high