Knife switches are most closely associated with horror films set in the 1800s, especially in underground laboratories such as the one depicted in Mary Shelley’s novel Frankenstein. This double knife-double throw switch allows for up to two circuits to be live or to be turned off. Simply connect the ends of the circuit to the two metal screw contacts on the switch and instantly you have mechanical way of breaking and connecting a circuit.
Defy gravity with this cool balancing eagle!
Command robotic creations with this cool construction kit!
Learn all about the science of light, optics and visual perception with this wonderful kit!
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!
Comprehensive collection of 30 fossils.
Head into the lab for an in-depth investigation of genetics and DNA!