In an adjustment mode, a control unit of a display control device displays, on a display, frame bodies imitating shapes of measuring instruments, and changes the display positions or/and the shapes at which or in which the frame bodies are displayed on the basis of input operation received by the input unit, and stores, to the parameter storage unit, the determined display positions or/and the determined shapes of the frame bodies as parameters of the display positions or/and the shapes of the measuring instruments.