05-06-2020 дата публикации
Номер: CN0210680210U
The utility model discloses a multifunctional mathematics teaching ruler. The ruler comprises a fixed ruler and a movable ruler, first magnetic blocks are arranged at the two ends of the fixed ruler.A first sliding groove is formed in the middle position; a second sliding groove is formed in the middle of the movable ruler. A sliding pin is arranged in the first sliding groove and the second sliding groove together. The sliding pin can slide in the first sliding groove and the second sliding groove. A second pin hole is formed in one end of the movable ruler, a positioning pin is arranged inthe second pin hole in a penetrating mode, a second magnetic block is arranged at the end, consistent with the first magnetic block in direction, of the positioning pin, the second magnetic block is rotationally connected with the fixed ruler through the positioning pin, and an adjustable chalk sleeve is arranged at the other end, opposite to the positioning pin, of the movable ruler; an angle ruler ...
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