Abstract: A capsule mass measuring device includes conveyer roller and measurement device having measurement plate. Conveyer roller is provided with protrusions and accommodation parts formed between adjacent protrusions, and each of which accommodating the capsule such that a longitudinal direction of the capsule is arranged along rotation axis. Measurement plate is provided with groove part and the measurement plate is arranged such that the capsule in accommodation part is supplied to groove part, by a rotation of the conveyer roller, during a period after the capsule passes through the lowest point until rotating 45 degrees, and the capsule of which the mass has been measured is discharged from measurement plate by contacting one of protrusions, which is defined as one protrusion, due to the rotation of conveyer roller.

Abstract: The invention provides a weight selecting apparatus capable of automatically performing calibration, and provides a weight selecting apparatus capable of certainly carrying objects to be inspected with a relatively simple mechanism and performing weight measurement of the objects. The objects, after being subjected to weight measurement by a first weighing unit 2, are sampled by a sampler 5, and those of the objects thus sampled are subjected to weight measurement by a second weighing unit 6. A calibration unit compares, for the same object, the measured result with that obtained by the first weighing unit 2 and discriminates whether or not a difference therebetween is within a specific error range, to perform calibration of the first weighing unit 2. Further, as a carrier 3 for carrying the objects to the weighing unit 2 one by one, there is used an intermittently rotatable carrying roller 32 having in its outer peripheral surface portion a plurality of carrying pockets 321.