| 摘要 |
A chock device as used in rock climbing, is wedge shaped for jamming in a variety of cracks or fissures in the rock face, and comprises a rigid body comprising three mutually parallel spaced bars 1, 2,3 of common length adjoining orthogonally at their ends with a pair of tapered flanks 4 carrying profiled ends. The centre bar 2 locates and supports a sling 5. <IMAGE> |
