100mm Spark Induction Coil with Adjustable Vibrator Human Anatomy_Human Skeletons & Bones sized to keep electromagnetism demonstrations

sized to keep electromagnetism demonstrations running when the original coils wear out

Cast-metal base mounts a heavy-duty electromagnet-driven fork at ~80Hz

Extended-range rheostat at 10

Black rubberized vinyl halter apron measures 27 by 42 inches

accepting rods up to three-quarters of an inch for positioning apparatus at any angle

100mm Spark Induction Coil with Adjustable Vibrator Human Anatomy_Human Skeletons & Bones sized to keep electromagnetism demonstrationsLarger spark 100mm induction coil from a 6 12V DC input with adjustable vibrator and base mounted suppression capacitors, supplied with two 5 inch insulated handle pointer electrodes.