A Jb Creation Directional magnetic compass, also sometimes called a magnetic compass or simply a compass, is a navigational tool that uses Earth's magnetic field to determine direction. It is typically a portable device with a magnetized needle that pivots freely on a pin or jewel bearing. The needle aligns itself with the magnetic field, pointing roughly towards the Earth's magnetic north pole.

Here are the key parts of a directional magnetic compass:
Magnetic needle: The magnetized needle is the heart of the compass. It is usually a small, lightweight bar made of steel that has been magnetized. The north-seeking end of the needle is typically marked with red or an "N" to distinguish it from the south-seeking end.
Compass housing: The needle is housed in a protective case, which is often made of plastic or metal. The housing may be filled with a liquid to dampen the movement of the needle and reduce oscillations.
Directional markings: The housing is marked with directional degrees or cardinal directions (north, south, east, and west) to allow you to read the direction that the needle is pointing.
Directional magnetic compasses are a simple and reliable way to determine direction, and they have been used for centuries for navigation. They are still a valuable tool for hikers, campers, backpackers, and anyone who spends time outdoors. While they are not as precise as GPS devices, they are a great backup option and can be especially useful in areas where there is no GPS signal.