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3 Early Electric Motors, c. 1900...
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Spark Coil with Vacuum Scale, c. 1920...
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2 Early Electric Motors, c. 1900...
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4 Special Tools and Demonstration Instruments...
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Contact Pendulum by E. Zimmermann, c. 1923...
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Crookes Phosphorescent Butterfly Tube, c. 191...
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2 Physical Instruments, c. 1900...
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Japanese Mariner's Compass, c. 1850...
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Small Wood Terrestrial Globe, c. 1800...
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3 Compasses...
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French Tellurium, c. 1880...
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Islamic Brass Qibla Indicator...
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Märklin Horizontal Twin-Cylinder Steam Engine...
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Doll Vertical Steam Engine No. 354/3, c. 1930...
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Märklin Steam Engine Dynamo No. 3395, c. 1912...
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Large Steam Engine Demonstration Model, Late ...
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"Dampfmaschine" (Steam Engine) by Hartmut R. ...
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Steam Engine Schematic Wall Plaque, Late 19th...
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Very Large Steam Engine with Dynamo...
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Märklin ME 70/12920 French Steam Locomotive, ...
