Product Description The MP401E is Keson?s only electronic wheel with a steel frame. It is the world?s sturdiest electronic measuring wheel and the easiest and most comfortable to use. It will stand up to the harshest conditions. Our easy-to-read digital counter is in the most protected spot on the wheel. With the handle up, it is nearly impossible for the counter to come into contact with the ground. With the handle down, the roll bar offers solid protection. Counter requires 2 AA batteries (not included). From the Manufacturer The MP401E is the only electronic wheel with a steel frame. It is the world?s sturdiest electronic measuring wheel, and we think it?s the easiest and the most comfortable to use. We are confident that it will stand up to the harshest field conditions. Great for Contractors, Estimators, Engineers, Landscapers, Paving Contractors, Fencing Specialists, Real Estate Pros, Utility Personnel, Surveyors, Police Work, Facility Engineers, and Telecommunications Contractors. Features found on the MP401E include a swan-neck, ergonomic handle with Our patent-pending thumb-up grip to ensure less wrist strain and superior control.Has reliable input system: uses magnetic sensors, however dust, dirt and other particles can disrupt a light beam used in competitive units. Our magnetic pick-up does not have these problems. Sealed counter encasement is designed to NEMA Class II standards, our counter housing ensures that it will not be damaged by rain. What?s more, you can safely clean the entire wheel with a damp cloth. Larger counter size placement. Our huge digital counter is in the most protected spot on the wheel. With the handle up, it is nearly impossible for the counter to come into contact with the ground. With the handle down, the roll bar offers solid protection. Advantages of all MP series wheels ? Innovative, simple center-line design, great balance. ? Rugged 3/4? steel frame?strongest frame in the field. ? Compact fold-down?easily reduces to 1/2 its size for storage and portability. Storage is a snap. SwanNeck ergonomic handle. our patentpending thumbup grip ensures less wrist strain and superior control Dust, dirt and other particles can disrupt a light beam used in competitive units, our magnetic pickup avoids these problems Sealed counter encasement Counter size and placement Calculates area, and stores readings in 8 memory storage fields