Flex Self-levelling multi-line laser for visual room layout ALC 8 (458.600)Cross laser projection Four vertical laser lines at 90, a switchable horizontal 360 line plus lead function. Self levelling with robust magnetic damping Optical and acoustical warning signal when self levelling range is exceeded Transportation lock with universal floor tripod Dust and splash proof 5 8 connection thread for tripods Integrated Li polymer rechargeable battery The all rounder with a great variety of functions for all indoor levelling work