Simple Wooden Microscope, by Logan, USA, 1871

Wooden stand with a turned base and pillar. The plane sub stage mirror is a replacement and is mounted on a rod near the base of the pillar. The rectangular stage is set at the top of the pillar and has two steel spring clips. An arm with a ring to hold the lenses is mounted on a square sectioned rod that runs down the inside of the pillar. Focusing is by a wooden nut in the pillar that acts on the rod. The label reads 'Globule Lenses for Logan's Simple Microscope' and the diameters of the lenses.