A limit stop support device for fitting variable-width plasterboards upon
appliances for lifting and handling such boards comprises a one-piece
receiving support which fulfils various adjustable-position sliding
functions along a holder arm of the board holder or panel holder. The
support receives a board or panel limit stop which is retractable in
opposition to elastic return element(s) located on the receiving support,
and a unit which fulfills a dual function of locking the receiving
support in position on the arm and limiting the travel of the limit stop
in opposition to the elastic return element(s) in an operating phase in
order to place boards and panels on a ceiling and/or wall.