Mini Variable Resistance Potentiometer
Potentiometer - a potentiometer is a variable resistor with three terminal that's adjustable.
They include sliding contacts that will form a voltage divided one can change,when only two of the terminal are in use,this is the classic variable resistor.
The best example of this sort of resistor and potentiometer is the rtrostat.
In fact,the above potentiometer parts are the types of things you'll find the thermostats and rheostats.