The present invention relates to a device for assembling a vehicle body, and more particularly to a device for assembling a vehicle body that is capable of corresponding to various models of vehicles in a process of manufacturing a vehicle body. The contact apparatus includes a contact holder for accommodating the contact, and the contact of the contact apparatus is provided for the connection to at least one electrical mating contact. The downspout hinges are coupled to opposing surfaces of the downspout, including opposing sides of the same horizontal surface. This configuration avoids, or at least reduces, the chance of jamming caused by crop materials around the roller. If the offset distance does not exceed a threshold value, then the closest image slice is displayed.