Create a level line : Laser Perfect 4
Laser Perfect 4 gives you four perfectly straight lines in
all four directions that will allow you to create straight or
intersecting lines or create a box to almost any size you need. Laser
Perfect 4 is ideal for painting, wall-papering, hanging shelves and
cabinets and virtually all do-it-yourself projects.
(?/ via asseenontv.com: $19.95)
Never mind if it's not straight line. we aren't robot.
