A dial plate structure includes first and second dial plates, a rotary indicator and a cover member. The first dial plate has a cutout portion. The second dial plate is arranged under the first dial plate and has a plurality of function display portions exposed through the cutout portion. The rotary indicator is arranged between the first and second dial plates and has a function indicator to selectively indicate one of the function display portions by rotation. A part of the rotary indicator is exposed through the cutout portion. The cover member is arranged on the second dial plate. The plurality of function display sections are arranged radially outward than the rotary indicator. The cover member is arranged to face the outer periphery of the rotary indicator and to prevent the outer periphery of the rotary indicator from visually contacted through the cutout portion.