OSPSHPG Electromagnetic Cyclotron Model, DIY Perpetual Motion Machine Model, Iron Ball Circular Motion Coil, for Lab & Classroom

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$60.54

Last updated on August 20, 2026 12:11 am
OSPSHPG Electromagnetic Cyclotron Model, DIY Perpetual Motion Machine Model, Iron Ball Circular Motion Coil, for Lab & Classroom
OSPSHPG Electromagnetic Cyclotron Model, DIY Perpetual Motion Machine Model, Iron Ball Circular Motion Coil, for Lab & Classroom

$60.54

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