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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 you need to do in the end is to check the map scale and to multiply your data by the denominator in the scale. UGears 70138
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Printed circuit board and programmed car computer system with LCD display, white marks. AVT3095 / 01 A +
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Stabilized laboratory power supply Wanptek with variable voltage regulation in the range from 0 to 30V and current in the range of 0 to 5A. Wanptek KPS305D
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The assembled SNAKE electronic game. AVT5554 C
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