36mm semi-apochromatic microscope objective
1901
Three apochromatic and one semi-apochromatic microscope objectives, with brass cases, and four compensating eyepieces, by Carl Zeiss, Jena, German, 1880-1901
1901
1890
1894
1890
1880-1901
1880-1901
1880-1901
1880-1901