Case mounted English Botanical Microscope, c. 1840
This English botanical microscope is supplied with
four objectives, which can be used singly or in different combinations
to vary the magnification. In addition, it is supplied with a brass
trough with glass bottom for wet work, a glass stage insert, and three
wooden slides each with multiple specimens mounted between mica disks. The main
focusing adjustment is accomplished by sliding the stage up and down
along the pillar, while the knob on top of the pillar functions as a
fine focus adjustment.