Polarizing microscope

J. Swift & Son, London
Polarizing microscope (lacquered brass) with black lacquered brass limb and base in fitted mahogany case with accessories. Main focus by rack and pinion and fine focus by thumbwheel micrometer on the limb. Circular rotating stage with 360-degree scale. 2 objectives and 3 oculars, a flat and concave mirror, Abbe illuminator with extra lenses and two condensers with Nicol prims polarizer. The analyzer (Nicol prism) is fitted on a sliding shoe into the lower part of the body tube. Bertrand lens in the body tube. Slits for compensator plates; mica, gypsum, quartz. Double nosepiece. Height max. 40 cm.
Signed on the base "J. SWIFT & SON LONDON", with serial number "11667" on the bottom of the base. ca. 1903-1904.

private collection