Answer: Both hydraulic and electronic dynamometers are used for measuring tension, but they operate differently.

• Hydraulic Dynamometers: These are robust, simple to use, and don't require an external power source. They measure tension by converting the force applied to a hydraulic cylinder into a pressure reading on a dial gauge. They are highly reliable in harsh field conditions and are often favored for their durability and low maintenance.

• Electronic (Digital) Dynamometers: These offer higher precision and advanced features. They use a load cell to convert force into an electrical signal, which is displayed on a digital screen. Electronic models often include features like peak hold, overload alarms, data logging, and wireless connectivity, making them ideal for detailed reporting and modern project management.