An oxidised and lacquered brass binocular microscope, with eyepiece rack-and-pinion focusing, main rack-and-pinion focusing with side mounted fine focusing screw, prism, mechanical rectangular stage, sub-stage condenser, plano-concave mirror on sliding collar on raised horse shoe foot, with accessories in fitted mahogany case, - 15½in.(39.4cm)
Details
An oxidised and lacquered brass binocular microscope, with eyepiece rack-and-pinion focusing, main rack-and-pinion focusing with side mounted fine focusing screw, prism, mechanical rectangular stage, sub-stage condenser, plano-concave mirror on sliding collar on raised horse shoe foot, with accessories in fitted mahogany case, - 15½in.(39.4cm) see colour illustration
Lot Essay
This microscope is probably a version of Swift's Challange Microscope C model c. 1880, an example of which can be found in G.LE' Turner The Age of the Microscope, 1988 p.186 No.188