In use of an electronic weigher, to weigh a particular commodity, individual commodity data is called from memory by pressing an individual preset key (10) and is utilized by a display (6) or printer (7). At least the weight and price of the commodity are displayed. Disposed at one side of the weigher body (2) is an auxiliary keyboard (11) having a plurality of preset keys (10) for reading out the commodity data. This keyboard (11), which is connected to the weigher body (2) by a connecting shaft, can be erected and reclined about the connecting shaft and disconnected from the weigher body when desired, thereby providing for greater flexibility and convenience as compared with prior weighers.