A container supplied to a carousel type filling unit is directed onto a supporting and weighing device (1) that presents a hollow body (12) attached to the carousel and housing a load cell. The hollow body (12) is equipped with a pedestal (19) presenting a platform (20) on which to stand the container, and a connecting element (21) of which a first end (21a) is coupled with the load cell internally of the hollow body (12) and a second end (21b), opposite to the first end (21a), is secured to the platform (20). To advantage, the first end (21a) of the connecting element (21) is seated in a through opening (13) afforded by the underside of the hollow body (12).