25mm Spark Induction Coil, 10 x 7 x 6.5" Type_Dual End Heaviest 125-watt soldering iron in

Heaviest 125-watt soldering iron in the line with a wooden bakelite handle

Four-cell D-size holder in unbreakable plastic with curved retention sides

Illustrates that sound needs a medium to travel through a 10-inch acrylic bell jar with internal buzzer

Highly-detailed digestive canal model isolates the GI tract from surrounding organs to expose mucosal and muscular layers along the full length of the canal

Four-metal cylinder set at identical 1

25mm Spark Induction Coil, 10 x 7 x 6.5" Type_Dual End Heaviest 125-watt soldering iron inDemonstrates electromagnetic induction and Faraday's law by stepping DC input into 25mm high voltage sparks across adjustable electrode rods on an open chassis.