54-440-600-0 Fowler Electronic LevelFowler Mini Mag Protractor This Fowler Xtra Value 9" Electronic Level features a compact design and built in accuracy of + 0. 02. Its durable construction ensures reliable precision measurement, while its intuitive operation ensures easy use. Suitable for a variety of applications, this electronic level delivers accurate results in a user friendly package. Features include Measuring Range: 4 x 90 Resolution: 0. 05 Accuracy: + 0. 2 Repeatability: + 0.