A weighing scale (100, 100A, 200, 200A, 200B, 300, 400) comprising: a base plate unit (40, 40A, 40B, 50) having: an underside portion facing a floor surface on which the weighing scale is placed; and a weight measurer (10, 70) for measuring weight for the amount of load and generating weight information, characterised in that: the weighing scale further comprises plural leg portions for supporting the base plate unit in such a manner that one end of each leg portion is mounted to the base plate unit and the other end of each leg portion is in contact with the floor surface; and the base plate unit (40, 40A, 40B, 50) further comprises: a detector (10, 30, 30a, 31, 31 a, 31 b, 32, 34) for detecting whether a minimum distance between the underside portion of the base plate unit and the floor surface is zero when he load is applied; a generator for generating error information indicating the occurrence of an error state in a case in which it is detected by the detector that the minimum distance is zero, the error state indicating that accurate measurement of weight is impossible; and a notifier (10, 15) for notifying a user of the occurrence of the error state based on error information generated by the generator. a base plate unit (40, 40A, 40B, 50) having: an underside portion facing a floor surface on which the weighing scale is placed; and a weight measurer (10, 70) for measuring weight for the amount of load and generating weight information, an underside portion facing a floor surface on which the weighing scale is placed; and a weight measurer (10, 70) for measuring weight for the amount of load and generating weight information, characterised in that: the weighing scale further comprises plural leg portions for supporting the base plate unit in such a manner that one end of each leg portion is mounted to the base plate unit and the other end of each leg portion is in contact with the floor surface; and the weighing scale further comprises plural leg portions for supporting the base plate unit in such a manner that one end of each leg portion is mounted to the base plate unit and the other end of each leg portion is in contact with the floor surface; and the base plate unit (40, 40A, 40B, 50) further comprises: a detector (10, 30, 30a, 31, 31 a, 31 b, 32, 34) for detecting whether a minimum distance between the underside portion of the base plate unit and the floor surface is zero when he load is applied; a generator for generating error information indicating the occurrence of an error state in a case in which it is detected by the detector that the minimum distance is zero, the error state indicating that accurate measurement of weight is impossible; and a notifier (10, 15) for notifying a user of the occurrence of the error state based on error information generated by the generator. a detector (10, 30, 30a, 31, 31 a, 31 b, 32, 34) for detecting whether a minimum distance between the underside portion of the base plate unit and the floor surface is zero when he load is applied; a generator for generating error information indicating the occurrence of an error state in a case in which it is detected by the detector that the minimum distance is zero, the error state indicating that accurate measurement of weight is impossible; and a notifier (10, 15) for notifying a user of the occurrence of the error state based on error information generated by the generator.