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Early German Three-Draw Telescope, c. 1820...
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Large German Five-Draw Telescope, c. 1890...
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Early German Three-Draw Brass Telescope, c. 1...
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Marine Refractor Telescope, c. 1870...
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Long Hand-Telescope by Lerebours, Paris, pre-...
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Four-Draw Refracting Telescope by George Adam...
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French Telescope by Hurlimann, c. 1880...
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2 Brass Telescopes, c. 1860...
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Mahogany Microscope Slide Cabinet, c. 1900...
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Microscope by Zeiss in Jena, 1897...
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Compound Microscope by Carl Zeiss in Jena, 18...
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Microscope by Zeiss in Jena, 1897...
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Compound Microscope by Carl Zeiss in Jena, 18...
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Early Simple Microscope by Carl Zeiss, Jena, ...
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Microscope by Zeiss in Jena, 1881...
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Trichina Microscope by Carl Zeiss in Jena, 18...
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Large Microscope by Leitz in Wetzlar, c. 1886...
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2 Microscopes by Ernst Leitz in Wetzlar...
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Brass Microscope by Leitz, c. 1901...
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Large Microscope by Leitz, Wetzlar, c. 1897...
