DeWalt DW082K Cordless Laser Level

Self-Levelling plumb bob is accurate to ± 0.2 mm/m
Self-Levelling up to 4° surface angle, finds plumb in seconds
Focused laser beam keeps dot smaller over long distances
Cross-hair beam pattern helps user find center of beam
Locating magnets hold Laser Plumb Bob for easy positioning
Requires 4 x AA batteries