Self-leveled line by Zircon

About the size and shape of a tape measure, iLine generates a self-leveled line in all four directions—up, down, left or right. It’s fast and easy to use, and easily pins to a wall or fits comfortably in your hand. Just pop it open, place it against the wall and point it in the direction the line is needed. Its self-leveling mechanism projects a precise plumb or level line.