The invention is based on a locating device for locating objects in an item being investigated, the device having a basic body, a guide unit for guiding along the item being investigated in at least one direction of movement and an output unit. It is proposed that the locating device has a control unit which, in conjunction with the output unit, is provided for the purpose of outputting at least one item of information relating to a distance in the direction of movement with at least one dimensional distance variable.