Beschreibung:

A good late 19th-Century English compound binocular microscope, signed on the foot J.SWIFT & SON. 81 TOTTENHAM COURT R D, LONDON , Challenge model, in a fitted mahogany carrying case -- 41.2cm (16¼in.) high See Illustrations The lacquered-brass binocular body-tube has rack and pinion focusing and eye piece adjustment, micrometer fine adjustment, Wenham prism box and a double nosepiece. It is mounted on a curved, oxidised-brass limb to which is also mounted the circular mechanical stage. Beneath the stage is the substage condensor mount with Abbe condensor and diaphragm, adjustable via rack and pinion, and the plano-concave substage mirror. The limb tilts between two uprights on the raised oxidised-brass U-shaped foot; between the two uprights is cross-bar to balance the microscope in a horizontal position, stamped with the Swift emblem. Accessories include: two pairs of eyepieces, stamped A and C; two other eyepieces; Swift ¼, ½, 1 and 4in. objectives in brass canisters; an objective extension sleeve; two further substage condensors; a brass canister with three oxidised-brass substage aperture discs; and stage-mounted forceps. The mahogany case has some blue felt padding and a brass carrying handle. A brass plaque to the top of the case reads John Wilson MANCHESTER .