Product no.: UG-0001

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The "counter" registers repetitive actions. It is an integral part of a device called an "oodometer". The model has three cylindrical gears with the digits 0 to 9 and a Maltese cross gear. Thanks to this combination, it is possible to observe an interesting mechanical process: how the reciprocating movement of the pushbutton is converted by means of the Geneva gear into the rotary motion of the cylindrical gears with the digits Housing or by means of a rotary handle on the side part of the model. Pressing the push button or turning the handle advances the counter one digit. As soon as it reaches 9, the Geneva cross gear engages the next registration wheel and includes it in the count. Overall, the three-digit display of the counter can register values ​​from 1 to 999. To reset the counter manually, the cover on the front can be opened. Count the steps you take on your way home. Or how many people you meet on a walk through the park. How about the number of blue cars that pass your house in an hour? Count the steps in your stairwell, school, or a friend's apartment. Inventor and time of invention A counter as an essential part of an odometer was invented in Ancient Greece by the mathematician and engineer Heron of Alexandria, who in AD 10-70. lived. This counter measured stride length using the number of revolutions of the wheel. Later the counter was improved and provided with a reduction mechanism that reduced the number of wheel revolutions depending on the measuring system (miles, leuge, kilometers) and reduced the displayed values. use Today counters are used to count the number of passengers, visitors to an event, vehicles passing through certain checkpoints, sets or points in sports competitions, items made on a production line, etc. Richly illustrated instruction booklet Model size: 13.5 x 6.5 x 12.2 cm Package size: 20.5 x 18.8 x 6.3 cm Number of components: 157 Setup time: 1-2 hours Difficulty level: easy

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