Five-point level with points up/down, front and sides for plumb, level, align and 90° square. Its accuracy is +/- 1/4'' at 100'. Eliminates the need for 3-4-5 In. measurements in laying out a 90° angle. Smart Pendulum System self-levels, indicates out-of-level condition and locks when switched off. Compact design allows the unit to go anywhere and can be used in almost any interior application. Multi-purpose attachment positions the mount with magnets, strap or threaded mounts (5/8'' to 11, 1/4'' to 20). One-person does the job of two people using manual plumb bob.