Ugears Curvimeter STEM LAB ★Mechanical 3D Puzzle Kit Model Toys Gift Present Birthday Xmas Christmas Kids Adults tools This wooden model kit can

This wooden model kit can be customized to create a unique masterpiece

5D Classic Vehicles collection—the first series in a new line of Ugears 2

set up your laptop or writing work station anywhere in your office or home

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Ugears Curvimeter STEM LAB ★Mechanical 3D Puzzle Kit Model Toys Gift Present Birthday Xmas Christmas Kids Adults tools This wooden model kit canThe Curvimeter or opisometer is a device that measures the length of curved lines and helps to calculate the distance between the points on a map more precisely than a ruler or a compass. The mechanism has a measuring wheel, a clock face, and a hand. When the wheel moves along the line on a map that you need to measure, the hand moves around the clock face marked with measuring units centimeters, inches, etc. All you need to do in the end is to check