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Zeiss Universal Theodolite Th.II, c. 1939...
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Receiver for Submarine Signaling Device, c. 1...
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Holtz's Influence Machine and English Resista...
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Sundial, 1854...
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Polarimétre Laurent, c. 1910...
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"Menlo Park Reminiscences", 1937...
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Mining Surveying Compass by Steinberger, 1779...
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Berlin Brass Compound Microscope by Wasserlei...
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English Double-Pillar Microscope, c. 1840...
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Gould-Type Travel Microscope by William Cary,...
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Collapsible English Compass-Type Simple Micro...
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3 Stanhope Magnifiers, c. 1850...
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Group of Simple Microscopes and Magnifiers...
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Carl Zeiss Research Microscope, 1882...
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Carl Zeiss Research Microscope, c. 1886...
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The Botanic Microscope by William Withering, ...
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5 Brass Microscopes, c. 1900...
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Wilson-Type Screw-Barrel Microscope, c. 1730...
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Nuremberg Compound Monocular Microscope, c. 1...
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English Brass Culpeper-Type Compound Monocula...
