This Berger Dual Beam Rotary Laser level can simultaneously throw a horizontal and a vertical beam. This allows you to cast a "cross-hairs" target on the wall for ceramic tiling, for example.
Berger's LM 301 is a slightly higher quality rotary level that can beam a laser line up to 100 foot range, for a total 200 foot diameter circle. This is a manually adjusting laser level.
