Ensure accurate measurements with our scalable Measuring Wheel. Featuring a precise gear structure with 0.5% accuracy and a duodecimal number system for easy data reading. This durable wheel, constructed from aluminum alloy and TPR plastic, excels on various terrains. It covers a wide metric range of up to 10,000 meters, ideal for diverse surveying tasks. Portable and foldable, it conveniently fits into a backpack for on-the-go measurements, extending to 95cm when in use. Perfect for construction, landscaping, and homeowners defining property boundaries. 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 - 950mm 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.