Acrylic material CG Point Adjust Tool is available now Compared to wood material, PMMA is not so easily deformed due to the change of environmental temperature and humidity. More nice photos as below: RC Plane Model Balance Stand Center Gravity CG Point Adjustment Tool Determination and adjustment of the center of gravity of RC model airplane and gliders up to 5 kgs. It is made of balsa wood, you need do some simple aemble. There is an easy measurement system with a sliding ruler. It has 1 mm measurement accuracy. It has a body measuring range of 200 mm. There are sliding support towers according to different body thicknees. Below is the effect photo(The plane is not included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.