This is an example of the Stand 4 that Zeiss introduced in the early twentieth century. It is a compound monocular with coarse and fine focus, triple nosepiece, circular stage, trunnion, sub-stage diaphragm and condenser, sub-stage mirror, horseshoe base, and wooden box with three extra lenses. The inscription on the eye tube reads “CARL ZEISS / JENA / NO 29291.” Those on the stage read “CARL ZEISS / JENA” and “GERMANY” and “1200.”
Ref: Carl Zeiss, Zeiss Microscopes and Microscopical Accessories (Jena, 1906), pp. 52-53.
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