| 摘要 |
The rule has a hinge connection (14) with two hinge plates (21, 24) fastened at two limbs (11, 12) respectively, and flexible guides (32, 34) with locking sections (36, 46) formed at one of the hinge plates. The locking sections cooperate with complementary locking sections (62-68) at the other hinge plate. The locking sections of the flexible guides lock the hinge connection in a bent position between a folded condition and an unfolded condition of the limbs using two of the complementary locking sections during pivoting of the limbs relative to each other. |
