The last photo of Carl Zeiss Jena Abbe 1.2 microscope condenser 3,5 mm handle for moving the iris diaphragm - Mikroskopteil
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Carl Zeiss Jena Abbe 1.2 microscope condenser - 3,5 mm handle for moving the iris diaphragm
(Carl Zeiss Jena Abbe 1.2 microscope condenser - 3,5 mm handle for moving the iris diaphragm)