Apparatus for supporting a mechanical hand, comprising a support member 200 pivotally coupled to a mounting member by a hinge pin, and at least one leaf spring 707 configured to resist movement of the support member about the hinge axis 604. The leaf spring may comprise a first and second leaf springs configured to resist motion about the hinge in first and second directions respectively. The leaf springs may bias the support member toward a neutral position. The leaf spring may comprise a plurality of unconnected layers. Apparatus for supporting a mechanical hand comprising a lock 750 to lock the position of a support member about a hinge that couples it to a mounting member, the lock actuated by a locking button. The lock may comprise a cam member coupled to a locking element, the cam member being constrained by a rail element along which it may translate.
