Feature: 1. The mechanical dial increases as it moves forward and is subtracted when it is reversed. 2. Measuring accuracy is plus or minus 0.5%. Specification: Item Type:Measuring Wheel Material: Aluminum Alloy + TPR Plastic Measuring Length: 0 - 9999.9m Error: ≤0.5% Total Length (Adjustable): Approx. 450mm - 1050mm Wheel Circumference: 0.5m Handle Diameter : About 30mm / 1.18in Wheel Diameter : 159mm / 6.26in Shrinkage Size: Approx. 45 x 16 x 14cm / 17.72 x 6.3 x 5.51in Package List: 1 x Measuring Wheel Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 【Measure in meters】Unlike other measuring wheels, the measuring wheel has a measuring range of 10,000M, which provides enough measurement for any type of measurement work, and is a rare meter-based measurement tool on the market. 【Application】The measuring wheel is ideal for indoor and outdoor projects, as well as for real estate appraisers, law enforcement officers, construction workers, greeners and homeowners to measure the boundaries of your property. 【Rubber roller】The walking roller is made of durable rubber and is suitable for all environments - grass, concrete, gravel, dirt, etc.! Perfect for professional work projects or school events. 【Retractable Rod】 – The measuring wheel handle is retractable and suitable for all ages. It can be shrunk down and carried in a backpack, making it perfect for work projects on the go. 【Easy to use】The measuring wheel is lightweight, ergonomic, easy to carry and use. Versatile enough for a variety of indoor and outdoor projects.