The dewalt dw083k self levelling laser has 3 beams accurate to02mmm it has a self levelling angle of up to 4 and the pointer can be rotated 180 with a one button operation for fast and easy operation of the laser the pendulum locks when in the off position and the focused laser beam keeps the laser dot small even over long distances for improved accuracy and visibility location magnets allow the pointer to be used on metal track or with wall bracket the industrial design allows pointer to be pla