The Ajax Scientific EL236-0000 double-pole, double-throw knife switch has posts with knurled nuts for securing electrical wire to the electrical switch. It has a Bakelite base for insulation from electrical current and screw holes for mounting the base to a bench or panel. The knife switch is used for making and breaking two simultaneous electrical connections in low-voltage science experiments and equipment.

Ajax Scientific distributes scientific equipment, supplies, and instruments for industrial, research, and educational applications. The company, founded in 1984, is headquartered in Toronto, ON, Canada.