DeWALT® DW0811LR Self-Leveling Cordless Line Laser Kit, 165 ft Measuring, +/-1/8 in at 30 ft Accuracy, 12 VDC, AA Battery, Plastic Housing | Dillon Supply
DEWALT DW089LR 12V 3 x 360 Red Beam Battery with DW0881T Laser Tripod - Amazon.com
6-0811-85 by DANLY IEM - Buy or Repair at Radwell - Radwell.com