A rotary laser engraving device comprises a frame having a centroidal axis and comprising a central bar arranged in a longitudinal direction and off set horizontally from the centroidal axis, a first support assembly carried by the frame for supporting a first end of an associated object to be engraved, a second support assembly carried by the frame for supporting a second end of the associated object to be engraved, a longitudinal adjustment mechanism carried by the frame and being configured to restrict movement of the second support assembly in a longitudinal direction along the central bar, and a vertical adjustment mechanism carried by the frame and being configured to move the second support assembly vertically with respect to the central bar.

The present invention relates to a positioning device for rotatably and rectilinearly positioning a card with respect to a treatment unit having an axis of treatment. The positioning device comprises a card holder for holding a card in a fixed position, wherein the card holder defines a virtual card surface plane coincident with the surface of a card facing the treatment unit once the card is placed in the card holder, and wherein the card holder defines a virtual card center point coincident with the intersection point of the axis of treatment and the virtual card surface plane. The positioning device further comprises a manipulator to which the card holder is attached, wherein the manipulator comprises: a cardanic element with a first axis of rotation and a second axis of rotation; and a virtual pivot point being the intersection of the first and the second axis of rotation.