Abstract: An operating device includes a device main body, and an operating body operated by a user. The operating body is movable between a first position and a second position and enables activation of a water-related appliance by moving from the first position to the second position. The device main body includes a marker part that is different in outer surface color from a neighboring area of the device main body. When the operating body is placed at the first position, the operating body hides the marker part from the outside, and, when the operating body is placed at the second position, the operating body exposes at least part of the marker part to the outside.

Abstract: A rotary handle is attached to a hot water single faucet and is a handle for controlling water discharge by rotational operation by an operator. A coefficient of friction of a grip member is set large in order to guide fingers of the operator to the grip member (operation surface) installed at a part of an outer surface of the rotary handle when the operator grasps the rotary handle. The grip member forms a line-shaped operation surface extending to a position not reaching a joint position of the rotary handle and the hot water single faucet along the outer surface in a direction of an axis of rotation.

Abstract: A vertical shaft windmill is provided in which: a casing (7) extends further upward than a lowest arm (5L); a radial bearing (BI) is fixed to the outer part of the casing (7); and the arm (5L) is mounted for rotation to the casing (7) through the radial bearing (BI). Unstable conditions in the overhang region can be eliminated without decreasing its wind receiving area and without interference with other members.