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 WheelMaterial: Aluminum Alloy + TPR PlasticMeasuring Length: 0 - 9999.9mError: 0.5%Total Length (Adjustable): Approx. 450mm - 950mmWheel Circumference: 0.5mHandle Diameter : About 30mm / 1.18inWheel Diameter : 159mm / 6.26inShrinkage Size: Approx. 45 x 16 x 14cm / 17.72 x 6.3 x 5.51in Package List:1 x Measuring WheelNote: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.