Museo Galileo
Virtual Museum
Lucernal and compound microscope
    • Setting:
      Room XI
    • Maker:
      George Adams junior
    • Place:
    • Date:
      ca. 1791
    • Materials:
      brass, wood
    • Dimensions:
      lucernal microscope: height 495 mm, support 477 mm; projection box 417 mm; compound microscope: height 272 mm; box 353x251x92 mm
    • Inventory:
      502, 1457, 3222 (scatola), 3243 (microscopio)
    • Lucernal and compound microscope (Inv. 502, 1457, 3222, 3243)
    • Lucernal and compound microscope (Inv. 502, 1457, 3222, 3243)

This optical compendium, from the Lorraine collections, is unsigned, but was certainly made by George Adams Junior. It contains many elements and accessories, a lucernal microscope, and a compound microscope. Grand Duke Ferdinand III personally donated it to the Museo di Fisica e Storia Naturale of Florence in 1791.

The lucernal microscope is mounted on a pillar supported by a tripod. A ball-and-socket joint on the pillar supports a horizontal rod to which is fixed the pyramidal projection box. The box carries the objectives at one end and is fitted at the other end with a ground glass screen (protected by a wooden shutter) on which the images are projected. The rod also carries the frame for observing opaque objects, a mirror, and a converging lens. There are about ten objectives and many accessories for preparing specimens.

The compound microscope is mounted on a square-sectioned pillar fitted with a tripod. The illumination mirror is hinged near the base and above it travels the stage. The body-tube is attached to the top of pillar and its eyepiece is fitted with two converging lenses and a field lens. The instrument, which fits into the same box as the lucernal microscope, also has an objective.