| 摘要 |
<p>The bow compass comprises two arm members articulated near the compass operating member, an opening adjusting member being interposed between the two arms. On one of the latter there is mounted an end piece consisting of a body (8) provided with a hollow (12) wherein there are housed resilient means (13) acting on a needle member (14) able of sliding within a guide (15), a screw member (16) being further provided for restraining and locking the needle member. <IMAGE></p> |
