2.5N Newton Meter Force Gauge Meter Dynamometer Spring Balance Physics Lab Experiment for School Teaching Tool Educational Toy

-1%

5n newton meter force gauge spring dynamometer physics lab experiment

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1

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10n newton meter force meter dynamometer spring balance physics experiment

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2

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2

5.0

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7

5.0

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5

5.0

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Kids children mini motor fan model physics science diy toy experiment kit

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Magnetic levitation solar motor brushless motor diy teaching model for physics scientific experiment

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4

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3.0

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3.0

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1

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-2%

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-4%

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2

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1

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1

-0.6%

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Physical optical experiment tool (3 kinds lens), educational science toy

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1

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1

3

5.0

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-8%

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4

1

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0

-20%

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1

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Educational electric motor diy assemble kit for home school teaching material

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1

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