The Bosch GLL 100 G Green-Beam Self-Leveling Cross-Line Laser uses green-beam technology, which generates lines up to 4X brighter than standard red beams. This gives the laser a working range...
PLS HVR505 R System is a fully automatic, dual slope red beam laser. The HVR505 R is self leveling horizontal-vertical with a 500 foot radius (1000 foot circle) outdoor range...