Cables have dielectric armor with an armor profile that resembles conventional metal armored cable. The hose guide includes two separate posts that can be each mounted on individual slats of a fence, with a center tube connecting the two separate posts. The shielded enclosure may contain a test antenna that is coupled to the test unit via a radio-frequency cable. The annular member has an inner secondary retainer diameter less than a spherical diameter of a partially spherical exterior surface defining a ball portion of the ball body so that the secondary retainer structure retains the ball body and the socket body connected if the primary retainer structure fails. Recording and reproduction of information can be performed likewise by using a recording or reproduction light beam accompanied with one or two tracking sub-beams. The adjusting lever, which is guided by the pull rods of the quadruple joint and the swiveling lever that detaches from the front hood at one end, lifts the front hood relative to the neutral state in the event of a collision.