A model vehicle fuel filler system is provided, comprising a fuel tank secured to a vehicle chassis, a fuel tank opening extending from the fuel tank, the opening having a rim tipped toward a lateral side of the vehicle chassis, thereby allowing a fuel filler bottle opening to be withdrawn away from the tank opening with less spillage. The parts of the casing and the sectors of the guide vane assembly are held together by a system forming a slide and a slider. The base comprises a U-shaped or V-shaped base member having first and second end portions; and a support member connected to and extending upwardly from the first and second end portions to the central frame member. The said collimator improves collimation and image resolution when compared to cylindrical, pinhole, laminar, or to other art collimators. The circuit board comprises: the base member; and the cable layer being laminated on the base member with anchor patterns, which are electrically conductive layers formed on a surface of the base member.