Polarizing microscope

J.Swift & Son, London
Polarizing microscope (lacquered brass) with black lacquered brass limb and base (black enameled iron) 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. Height 32 cm.
Signed on the base "J. SWIFT & SON | LONDON", with serial number "12413" on the bottom of the base. The cover of the case is signed "UNIVERSITY | OF | LONDON". ca. 1906-1907.

private collection