A fine early 19th-Century lacquered-brass Jones' Most Improved Compound Monocular Microscope, signed W. & S. JONES. 30 Holborn. LONDON , in a fitted mahogany case -- 32.7cm. (12 7/8in.) wide See Illustrations The body-tube has a tapered nosepiece which screws into the end of a short arm atop the main limb. The arm moves backwards and forwards by rack and pinion and can be swivelled from side to side. The square stage moves up and down the main limb by rack and pinion and can be moved laterally by means of a circular racked gear. Beneath the stage, each mounted on the limb with a sliding sleeve, are a bull's-eye substage condensor and a plano-concave mirror. The limb is mounted via a compass joint to the top of a tapering brass column terminating in a folding splayed tripod foot. Accessories include: two unnumbered objectives with domed brass screw caps; another in a brass canister; four lieberkuhn objectives, one of unusually large size (43mm dia.); a stage-mounted lieberkuhn; stage-mounted bull's-eye condensor; stage forceps; a frog plate; an eared stage attachment; a two-armed brass slide holder; a live box; condensor cone; tweezers; a Bonnani sprung stage; three long fruitwood sliders, no's 1 and 3 each with five cells, no. 2 with three large cells; three paper-covered slides; and an ivory canister containing talcs and retaining rings. Contained in a compartment in the base of the box are one brass, five ivory and two lignum vitae four-cell sliders; a black and white disc; and a circular six-bead objective mount. Also in the case is a 12.5cm. (4 7/8in.) long ivory-handled flea microscope with forceps, for use with the same objectives. The case itself has some blue plush padding, two brass hooks and eyes and two brass carrying handles.
A fine early 19th-Century lacquered-brass Jones' Most Improved Compound Monocular Microscope, signed W. & S. JONES. 30 Holborn. LONDON , in a fitted mahogany case -- 32.7cm. (12 7/8in.) wide See Illustrations The body-tube has a tapered nosepiece which screws into the end of a short arm atop the main limb. The arm moves backwards and forwards by rack and pinion and can be swivelled from side to side. The square stage moves up and down the main limb by rack and pinion and can be moved laterally by means of a circular racked gear. Beneath the stage, each mounted on the limb with a sliding sleeve, are a bull's-eye substage condensor and a plano-concave mirror. The limb is mounted via a compass joint to the top of a tapering brass column terminating in a folding splayed tripod foot. Accessories include: two unnumbered objectives with domed brass screw caps; another in a brass canister; four lieberkuhn objectives, one of unusually large size (43mm dia.); a stage-mounted lieberkuhn; stage-mounted bull's-eye condensor; stage forceps; a frog plate; an eared stage attachment; a two-armed brass slide holder; a live box; condensor cone; tweezers; a Bonnani sprung stage; three long fruitwood sliders, no's 1 and 3 each with five cells, no. 2 with three large cells; three paper-covered slides; and an ivory canister containing talcs and retaining rings. Contained in a compartment in the base of the box are one brass, five ivory and two lignum vitae four-cell sliders; a black and white disc; and a circular six-bead objective mount. Also in the case is a 12.5cm. (4 7/8in.) long ivory-handled flea microscope with forceps, for use with the same objectives. The case itself has some blue plush padding, two brass hooks and eyes and two brass carrying handles.
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