A Petrological Microscope
c.1900, English, signed to foot 'J Swift & Son, London', stands on black enamel foot with plano-concave mirror on an articulated arm, with swing out sub-stage polariser and pull out condenser, rotating black glass stage, body tube incorporating a slide in/out analyser and Bertrand lens, with three Swift objectives, two eyepices, in fitted mahogany case, width 34cm
Sold for £600
Result plus buyers premium
c.1900, English, signed to foot 'J Swift & Son, London', stands on black enamel foot with plano-concave mirror on an articulated arm, with swing out sub-stage polariser and pull out condenser, rotating black glass stage, body tube incorporating a slide in/out analyser and Bertrand lens, with three Swift objectives, two eyepices, in fitted mahogany case, width 34cm