An outer shape measuring apparatus, an outer shape measuring method, and a deboning apparatus for a poultry carcass that can grasp the outer shape of a desired region of the poultry carcass. The outer shape measuring device includes a fixing jig for mounting and fixing the poultry carcass, a conveyor path for forming the fixing jig, a conveyor for conveying the fixing jig along the conveying path, and a conveying of the fixing jig. A contact that is supported so as to be movable in a vertical direction within a two-dimensional plane extending in the vertical direction including the direction, and capable of contacting the target measuring unit of the poultry carcass, and a vertical position for detecting the vertical position of the contact A sensor, a fixed jig position sensor for detecting a moving direction position of the moving cone, and the vertical position sensor and the fixed jig position sensor according to the movement of the poultry carcass carried and supported by the cone And an outer shape calculation unit that obtains the outer shape of the surface of the poultry carcass on the two-dimensional plane based on the detected value detected from.
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