Wall scanning handheld units
Usually used inside buildings, these systems allow the operator to easily locate cables, voids, pipes, ground heating networks, on the ground, but also on the walls, or ceiling.
Here again, many different systems are available with different frequencies; depending the size of what you are looking for, and what is the depth of it.
All these units are handheld, and are convenient to use on a daily basis. They come with the same software than all GPR from USRADAR.