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3 Sales Catalogs of Technical and Scientific ...
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Sohlberg 10-Inch Glass Celestial Globe, 1888...
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Extra-Large Motor with Geissler Tube, c. 1880...
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French Graphometer, c. 1800...
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4 Physical Demonstration Instruments, c. 1915...
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Large Geissler Tube, c. 1900...
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2 Physical Demonstration Apparatus by Max Koh...
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Tangent-Galvanometer, c. 1880...
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Large Waywiser by Harris, London, c. 1780...
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3 Arm-Protractors...
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2 French Leveling Instruments...
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Surveying Instruments...
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2 Surveying Instruments, c. 1900...
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Circle Level by Wéry, c. 1880...
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2 Surveying Instruments, c. 1890...
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Small German Surveying Level, c. 1880...
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Theodolite and Further Surveying Instruments...
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Group of Surveying Instruments...
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10 Surveying Instruments...
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Brass Theodolite by ...
