How to use a socket torque wrench?

Measure the force! When you use it to tighten a screw, you can see the pointer scale on it! Where you point to represents how much force is used! For example, a screw on a certain machine needs a force of 100 N/m! Then when you install this screw, look at the movable iron bar above, and you can point it at this position! It is easy to break if it is heavy, and it is easy to loose if it is light!

Is a socket the same as a socket wrench?
Not the same, a socket wrench requires a socket to turn a screw or nut

What is a Weighted Socket Wrench
It is a socket wrench made of special high-strength alloy, which is mainly used for the installation and removal of high-strength bolts in special occasions.