"The DEWALT Builder's Level features 20X magnification for 200ft+ range, with 1/4in. per 100ft. accuracy. 360 horizontal circle with vernier scale allows for precise measuring of horizontal angles. Heavy-duty leveling base is fast and easy to setup and use. Leveling vial is protected for jobsite durability. Leveling Type Manual, Range ft. 200, Single, Pair, or System System, Magnification mm 20X, Includes Continuous drive horizontal circle, Thread Size in. 5/8-11, Style Builders level, Ratio 1100 Stadia ratio, Accuracy 1/4 in. per 100 ft."