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 mini single knife switch allows for a circuit to be live or to be turned off. Simply connect the ends of the circuit to the metal screw contacts on the switch and instantly you have a mechanical way of breaking and connecting a circuit.
Great microscope for viewing both slides and 3D objects such as flowers, bugs, rocks and more. Includes all accessories!
This classic device is used to demonstrate the conservation of mechanical energy.
Comprehensive collection of 30 fossils.
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
Create beautiful art with this amazing sun paper!
This caffeine molecule mug makes an excellent gift!
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