A Swift Binocular "Challenge" Microscope, English, c. 1880, signed to the rear of the foot ’J. Swift & Son 81 Tottenham Court Rd, London’, standing on a fully lacquered brass tripod base with trunnions supporting the main body, with plano-concave mirror in a gimbal on an articulated arm, substage condenser assembly on slide-out dovetail with rack and pinion focusing, fully mechanical stage with with 360 degree engraved scale to edge, X & Y control with silver vernier scales, body tube with course focus to rear and Swift’s patent lever fine focus, body tube with Wenham prism in pull out/in drawer, with the following accessories: a Swift 4in objective, a 2in objective, a 1in Swift objective, a 1/2in Swift objective, a 2in Swift objective, a 1/16in Immersion Can (no objective), a pair of binocular eyepieces engraved A, a pair of binocular eyepieces engraved B, an eyepiece marked C and one marked D, and other items, all in the original French polished mahogany cabinet. Cabinet height 40cm