A load cell which is Roberval-type load cell, comprising: an upper beam section extending horizontally; a lower beam section extending below the upper beam section in parallel with the upper beam section; a fastening section which connects one end of the upper beam section and one end of the lower beam section to each other and is fastened to a stationary object; a movable section which connects the other end of the upper beam section and the other end of the lower beam section to each other and, when a load is applied vertically to the movable section, the moveable section is displaced vertically and in parallel with the fastening section; and a cylindrical stopper member having a circular cross-section; wherein the fastening section has a first circular hole having a circular cross-section and being a through-hole penetrating the fastening section; wherein the movable section has a second circular hole having a circular cross-section, being a through-hole penetrating the movable section, and being concentric with the first circular hole; and wherein a base end portion of the stopper member is fitted into and fastened to the first circular hole and a tip end portion of the stopper member is located at an inner side of the second circular hole such that there is a space of a specified width between the tip end portion and an inner surface of the second circular hole, whereby when the movable section is displaced by the specified width, an inner surface of the second circular hole contacts an outer peripheral surface of the stopper member; and wherein the tip end portion of the stopper member is configured not to protrude outward from an outer peripheral surface of the movable section. an upper beam section extending horizontally; a lower beam section extending below the upper beam section in parallel with the upper beam section; a fastening section which connects one end of the upper beam section and one end of the lower beam section to each other and is fastened to a stationary object; a movable section which connects the other end of the upper beam section and the other end of the lower beam section to each other and, when a load is applied vertically to the movable section, the moveable section is displaced vertically and in parallel with the fastening section; and a cylindrical stopper member having a circular cross-section; wherein the fastening section has a first circular hole having a circular cross-section and being a through-hole penetrating the fastening section; wherein the movable section has a second circular hole having a circular cross-section, being a through-hole penetrating the movable section, and being concentric with the first circular hole; and wherein a base end portion of the stopper member is fitted into and fastened to the first circular hole and a tip end portion of the stopper member is located at an inner side of the second circular hole such that there is a space of a specified width between the tip end portion and an inner surface of the second circular hole, whereby when the movable section is displaced by the specified width, an inner surface of the second circular hole contacts an outer peripheral surface of the stopper member; and wherein the tip end portion of the stopper member is configured not to protrude outward from an outer peripheral surface of the movable section. a movable section which connects the other end of the upper beam section and the other end of the lower beam section to each other and, when a load is applied vertically to the movable section, the moveable section is displaced vertically and in parallel with the fastening section; and a cylindrical stopper member having a circular cross-section; wherein the fastening section has a first circular hole having a circular cross-section and being a through-hole penetrating the fastening section; wherein the movable section has a second circular hole having a circular cross-section, being a through-hole penetrating the movable section, and being concentric with the first circular hole; and wherein a base end portion of the stopper member is fitted into and fastened to the first circular hole and a tip end portion of the stopper member is located at an inner side of the second circular hole such that there is a space of a specified width between the tip end portion and an inner surface of the second circular hole, whereby when the movable section is displaced by the specified width, an inner surface of the second circular hole contacts an outer peripheral surface of the stopper member; and wherein the tip end portion of the stopper member is configured not to protrude outward from an outer peripheral surface of the movable section.