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Carl Zeiss monocular microscope. Jena. c.1945.

Victorian-era monocular microscope. Ernst Leitz. c.1880.

Ernst Leitz monocular microscope. Germany. c.1909.
Monocular microscope. E. Messter. Berlin. c.1890.

Monocular microscope Waechter P. Berlin. Stativ V model.

Monocular microscope. P. Waechter. Berlin. Stativ IV model.

Trichinoscope. P. Waechter .Friedenau. c.1875.

Monocular microscope. R. Wasserlein. Berlin. 1870

Monocular microscope J. J. Kipp. Delft. Holland. 1865.
