Knife Switch, Single pole - single throw — Eisco Labs
Electrical Circuit Education Jack Knife Switch
Amazon.com: American Educational 7-KS-1 Brass Small Knife Switch, Single Pole Single Throw (SPST), Plastic Base, 2" Length, 1" Width, 1" Height (Bundle of 10) : Industrial & Scientific
Knife Switch DPDT (Brass contacts and Steel screws) - ScienceKitStore.com