The Stabila 36520 24" Tech/Electronic IP65 magnetic level features electronic measuring technology, two digital displays, an audible inclination guide, IP 65 dust and waterproof housing, rare earth magnets for hands free use, and removable shock-absorbing end caps with anti-slip wall grips. Precise slope and angle measurements for metal fabricators, commercial carpenters, plumbers and more. Dual screens (front & top) allow easy viewing from any angle. Electronic displays illuminate for easy viewing in low light conditions, and include 5 display modes (degrees in 1 or 2 decimal points, percent, feet & inches (rise/run) in decimal, feet & inches in fractions and mm/m). Other features include instant measurement conversion to any scale (rise & run to degrees, degrees to percent, etc...), audible tones for sight free use, one button calibration and a carrying case. Requires two AA batteries for operation.