Automatically sets itself. Accuracy: 1/10,000 of a second. Controlling radio signal from NIST automatically adjusts clock for daylight savings time, leap year, and leap seconds. Highly visible bright second sweep hand. With NIST Traceable*. 30.5dia.x3.8Dcm.
Preserved Sheep Heart with Pericardium, Preservative: Formalin, With pericardium, High quality preservation, Mammalian organ dissection, teaching specimens to learn about the mammalian heart and cardiac anatomy, students about their own circulatory system
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
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