Ugears: Mechanical Models - Curvimeter menu_toys_arts_crafts Pyramid with five big cups

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Ugears: Mechanical Models - Curvimeter menu_toys_arts_crafts Pyramid with five big cupsUgears Mechanical Models Curvimeter The 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

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