Which of the following tools is primarily used for stripping insulation from wires?

The cable stripper is designed specifically for removing insulation from wires without damaging the underlying conductor. Its operation involves cutting through the insulation material at various predetermined depths, allowing the user to expose the wire inside for connection or contact points. This tool is essential for electrical work, enabling technicians to prepare cables for various applications safely and quickly.

The other tools listed serve different purposes: a chip puller is used for extracting integrated circuits from circuit boards, a multimeter measures electrical parameters such as voltage, current, and resistance, and a soldering iron is utilized for melting solder to join electronic components. Each of these tools plays a distinct role in electrical and electronic work, but they do not have the specific function of stripping wire insulation that the cable stripper does.