Polarizing microscope

J.Swift & Son, London
Polarizing microscope (lacquered brass) with black lacquered brass limb and black enameled iron horseshoe base in fitted mahogany case with accessories.
Main focus by rack and pinion and fine focus by thumbwheel micrometer. Circular rotating stage with 360-degree scale. Swing out polarizer (Nicol prism). The analyzer (Nicol prism) is fitted on a sliding shoe into the lower part of the body tube. Double nosepiece. Height 36 cm.
Signed on the backpiece "J. SWIFT & SON | LONDON", and serial number "17067" that also figures on the cover of the case, early 20th century.

private collection