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.
A beautiful desk toy for your favorite person’s office!!
Create beautiful art with this amazing sun paper!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
This is a classic demonstration toy of the powers of magnetic fields!
Learn about detective science through this fun fingerprinting kit!
The large realistic model has removable organs that can be studied and set back into the correct position.