Pichler C of G MachinePractical centre of gravity scales for motorized models up to approx. 2. 5 meters wingspan and gliders up to 10kg. The Pichler centre of gravity scale is supplied as a kit that can be assembled quickly and easily without any prior knowledge. Only glue, e. g. wood glue, is required for assembly. The Pichler gravity scale can be folded flat and stowed away after use. Product features * Laser engraved millimetre scale on both sides * Large adjustment