About $90; craftsman.com
It projects 120-degree level and plumb beams separately or together. Handy for tiling walls or floors. Like these other lasers, it beeps when out of level, but this one's beam can be locked, for example, to help you lay out staircase wainscoting. Specs:
1.5 pounds, 100-foot visibility, accurate to ¾
inch at 100 feet. Includes adjustable base.