All Products（15）
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Small Magnetic Needle
Model NO.：QH2406
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Turning fork set
Model NO.：QH2206-1
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Model of Mini Electric Motor
Model NO.：QH2417-1
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Wimshurst machine
Model NO.：QH2310-1 QH2310-2
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Solid Body Expansion Demonstrator
Model NO.：QH6432
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Spectroscope
Model NO.：QH2551
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Demonstrator ofrefraction & refection oflight
Model NO.：QH2528-2
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Magnetic line of force land U
Model NO.：QH2441
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