"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. Includes Continuous drive horizontal circle, Range ft. 200, Ratio 1100 Stadia ratio, Single, Pair, or System System, Style Builders level, Leveling Type Manual, Magnification mm 20X, Thread Size in. 5/8-11, Accuracy 1/4 in. per 100 ft."