A composite operating device that is operable to rotate about a specific axis of rotation and operable to slide in a specific sliding direction that is orthogonal to the axis of rotation, the composite operating device comprising: a base; a slider that is supported by the base so as to be slidable in the sliding direction relative to the base; an operating member that is retained by the slider so as to be rotatable about the axis of rotation and is operable so as to slide in the sliding direction together with the slider; a tactile switch (61, 62) that is arranged to detect that the operating member has been operated to slide to a specific sliding operation position in the sliding direction; and a transmission member (71, 72) that is arranged to transmit an operating force acting on the slider due to a sliding operation of the operating member to the tactile switch (61, 62), wherein the slider comprises a transmission member pressing portion (39, 40) that is arranged to press the transmission member (71, 72) in the sliding direction, and wherein the base comprises a transmission member retaining portion (25, 26) that rotatably retains the transmission member (71, 72) so that when a pressed portion (71a, 72a) is pressed by the transmission member pressing portion (39, 40) in the sliding direction, the transmission member (71, 72) rotates and therefore causes an element pressing portion (71b, 72b) to press against the tactile switch (61, 62); the transmission member (71, 72) comprises: the pressed portion (71a, 72a) that is arranged to be pressed by the slider in the sliding direction; and the element pressing portion (71b, 72b) that is arranged to press the tactile switch (61, 62) in an element pressing direction that is parallel to the axis of rotation, and a pair of plate portions (71c, 72c) facing each other in a direction orthogonal to the sliding direction; wherein the pressed portion (71 a, 72a) has a cylindrical shape with an axis extending in the direction orthogonal to the sliding direction and parallel to a center shaft (25 a, 26a) of the transmission member retaining portion (25, 26), wherein the element pressing portion (71b, 72b) has the same shape as the pressed portion (71 a, 72a); wherein the pressed portion (71a, 72a) and the element pressing portion (71b, 72b) are each disposed between the pair of plate portions (71c, 72c) so as to connect the plate portions (71c, 72c) to each other; wherein the pair of plate portions (71c, 72c) each have a bearing hole (71d, 72d) into which the center shaft (25a, 26a) is inserted, wherein the pressed portion (71a, 72a), the element pressing portion (71b, 72b), and the bearing hole (71d, 72d) are arranged in a triangle. a base; a slider that is supported by the base so as to be slidable in the sliding direction relative to the base; an operating member that is retained by the slider so as to be rotatable about the axis of rotation and is operable so as to slide in the sliding direction together with the slider; a tactile switch (61, 62) that is arranged to detect that the operating member has been operated to slide to a specific sliding operation position in the sliding direction; and a transmission member (71, 72) that is arranged to transmit an operating force acting on the slider due to a sliding operation of the operating member to the tactile switch (61, 62), wherein the slider comprises a transmission member pressing portion (39, 40) that is arranged to press the transmission member (71, 72) in the sliding direction, and wherein the base comprises a transmission member retaining portion (25, 26) that rotatably retains the transmission member (71, 72) so that when a pressed portion (71a, 72a) is pressed by the transmission member pressing portion (39, 40) in the sliding direction, the transmission member (71, 72) rotates and therefore causes an element pressing portion (71b, 72b) to press against the tactile switch (61, 62); the transmission member (71, 72) comprises: the pressed portion (71a, 72a) that is arranged to be pressed by the slider in the sliding direction; and the element pressing portion (71b, 72b) that is arranged to press the tactile switch (61, 62) in an element pressing direction that is parallel to the axis of rotation, and the pressed portion (71a, 72a) that is arranged to be pressed by the slider in the sliding direction; and the element pressing portion (71b, 72b) that is arranged to press the tactile switch (61, 62) in an element pressing direction that is parallel to the axis of rotation, and a pair of plate portions (71c, 72c) facing each other in a direction orthogonal to the sliding direction; wherein the pressed portion (71 a, 72a) has a cylindrical shape with an axis extending in the direction orthogonal to the sliding direction and parallel to a center shaft (25 a, 26a) of the transmission member retaining portion (25, 26), wherein the element pressing portion (71b, 72b) has the same shape as the pressed portion (71 a, 72a); wherein the pressed portion (71a, 72a) and the element pressing portion (71b, 72b) are each disposed between the pair of plate portions (71c, 72c) so as to connect the plate portions (71c, 72c) to each other; wherein the pair of plate portions (71c, 72c) each have a bearing hole (71d, 72d) into which the center shaft (25a, 26a) is inserted, wherein the pressed portion (71a, 72a), the element pressing portion (71b, 72b), and the bearing hole (71d, 72d) are arranged in a triangle.