Knife Switch, Small, Screw Posts, Single Pole, Single Throw, 1 Each

The United Scientific® Knife Switch, Small, Screw Posts, Single Pole, Single Throw is a small SPST knife switch on a plastic base with screw connecting posts. Its open blade shows students clearly when a circuit is made or broken, and it is suitable for low voltage experiments below 3.6 V, such as one- or two-cell battery circuits. It is teaching equipment for school, college and introductory university physics labs.