What type of switch is represented by component 3 in figure T-2?

In figure T-2, component 3 is the symbol for a single-pole single-throw switch: one pole that simply opens or closes one circuit.
Technician · FCC Element 2 · answer reveals automatically

In figure T-2, component 3 is the symbol for a single-pole single-throw switch: one pole that simply opens or closes one circuit.