LASER TUNER EMITES ONE RED LINE , USED NP. FOR SAWING, PAINTING, CONSTRUCTION WORK, ETC.BODY MADE OF BRASS PROTECTED BY A LAYER OF PLASTIC. BASE MOVABLE WITH THE POSSIBILITY OF PERMANENT MOUNTING ON SCREWS, TEMPORARY ON THE EMBEDDED 3 MAGNETS OR STICKING ON THE FOAM TAPE.BODY LENGTH APPROX. 70 MM, HEIGHT APPROX. 60 MM. POWER 3 BATTERIES  1.5 V LR           / NOT INCLUDED/ INCLUDES screws for fixing to wood , metal and tape for gluing.