The invention relates to a baton comprising at least two tube pieces, an
outer tube piece and an inner tube piece which can be inserted into each
other like a telescope and are interlockable in both the retracted and
the deployed position. A radially displaceable locking top is disposed in
the final region of the inner tube piece, which can be inserted into the
outer tube piece, while a circumferential catching groove is arranged on
the inside of the final region of the outer tube piece. The locking top
is composed of several parts that are embodied like sectors of a circle
and are joined so as to form a ring while the locking cap extends past
the final region of the inner tube piece by means of a locking bulb. An
expanding cone for the locking top is placed in side the inner tube piece
across from the catching groove for the locking bulb, said expanding cone
being movable to a limited extent in an axial direction and being fixed
at the end of a positioning rod.