HookS Law Spring Set, Set Of Five Different Springs Constants, The Set Has Five Different Springs Constants For In Depth Investigation With Above HookS Law Apparatuses.
Demonstration Induction Coil, Heavy Gauge Enamelled Copper Wire Wound On Former 110 X 30 mm. Secondary Coil Of Fine Enamelled Copper Wire On Former 120 X 82 mm. Both Coils Fitted With 4 mm Sockets, With Primary Of Heavy Gauge Enamelled Copper Wire
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