Click to enlargeLarge, easy-to-read digital display True end-to-end measuring (unlike manual wheels) Measures up to 999,999.9 feet Highly accurate (99.9% or 1 inch/100 ft.) Rugged, yet lightweight water-resistant construction--built for high-impact "Safety orange" wheel Built-in calculator automatically figures area & volume measurements Operates in all common measuring units Store measurements in memory Built-in push-button counter and more! Includes: User's Guide, 4-Foot Wheel Circumference, Long-Life Battery, 1-Year Warranty