Racing Rings consists of three rods one each of copper, aluminum and PVC, Ring magnet is dropped down the PVC rod, it falls unobstructed, Two metal rods create an induced magnetic field to that adds resistance to the rings travel, metals are different, they fall at different rates
Preserved Turtule, Preservative: Formalin, Injection Type: Triple Injected, Reptile anatomy, General dissection, High quality preservation, to teach comparative anatomy explore the structures of the shell, internal organs pre-cut for ease of dissection, Size: 8 to 10in
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