Of course you do not want to hang a door, a painting or a kitchen cupboard, but with the naked eye this becomes a difficult task. The Einhell TC-LL 2 is the ideal helper to work straight. The cross line laser projects a horizontal and vertical laser on the wall and has a self-leveling function. This means that you will receive a warning if the tilt angles are greater than 4 degrees. The crotch lines can be fixed so that you can get to work easily. With the supplied clamp you place the TC-LL 2 anywhere in the room and you store or transport it neatly in the storage bag. The cross-line laser works on 2 AA batteries, which are not included as standard in this version.