| 摘要 |
Compass extension of the type comprising a receiving end which can be firmly attached to the compass and a point opposite the receiving end. It is made of a plastic material and includes a longitudinal cavity (4) fitted with a catch, (7, 8) at each of its transverse edges (6) and a cover (12) adapted to the size of the cavity (4), which includes a gripping part (17) on its outer face and which, when it is in place on the cavity (4), is engaged behind the catches (7, 8). <IMAGE>
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