Published in Autumn 1989 Zeiss Historica Journal
Author: Fred Matthies
See Page 12 – 13.
The author illustrates a Greenough designed stereo microscope built upon the patent of Ernst Abbe’s prism binocular. It was used for the purposes of mining engineering. It bears the trademarks of Carl Zeiss Jena as well as the Bausch and Lomb mark combining Zeiss, Saegmuller and Bausch and Lomb. Normally this microscope would have been made under license from Zeiss by Bausch and Lomb but in this case, it was imported and sold by Bausch and Lomb.
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