Power Matrix Set (Wimshurst Machine) Toys Children have fun learning common

Children have fun learning common fractions

or grams up to 11 lbs (5 kilogram) with 1-ounce and 50-gram increments

is mounted on an insulating support rod with a stable

dual-purpose electroscope

Rectangle plate Size: 1

Power Matrix Set (Wimshurst Machine) Toys Children have fun learning commonNo assembly required, simply attach the hand crank, begin cranking, and watch in wonder as the sparks fly. Overall Height: 15" 375mm. Acrylic Disk Diameter: 11" 275mm. Max. Spark Length: 4" 100mm. Premium Quality: Power Matrix Set is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in professional laboratories but is an ideal choice for science classrooms and