KEY FEATURES ACCURATE LEVELING: This Johnson Rotary Laser Tool is designed to complete both indoor and outdoor leveling jobs. The vertical self-leveling makes it equally suitable to aligning posts or footings; or indoors to layout walls or floors. PROGRAMMABLE DESIGN: The self-level digital laser features a programmable dual-slope function. 8 deg. Dual slope takes the math out of the equation when checking grade or setting drainage and makes this laser ideal for drainage; flatwork; or complex...