Abstract: A method of and an apparatus for weighing a continuous stream of fluent material (16) includes a weighing means (12) which, in use, in the direction of flow of the material, is arranged in a plane which is at an acute angle relative to a vertical plane; a load measuring means (14) for measuring the load imparted by the material (16) to the weighing means (12), the load measuring means (14) being arranged at substantially the same angle as the weighing means (12) to neutralise the effect of any frictional forces generated between the material (16) and the weighing means (12), and the load measuring means (14) being operable to generate a first signal representative of mass of the material; a speed measuring means (18) for measuring the speed of flow of the material (16) and for generating a second signal which is representative of the speed of flow of the material; and a processing means (38) for processing the first signal and the second signal to obtain an output signal which is representative of mass flow r