【Finished Size】 Diameter: 18.5cm This is a lunar age chart I received at the Otsu City Science Museum. Since you need to make it yourself, how about it as a craft project for children, or for the enjoyment of looking at the moon? 【How to Make】 Simply cut out two circles, one large and one small, and layer them. However, there are no pre-cut slits. Cut out the two circles with scissors, then use a cutter to cut out the three [ ] sections in the middle of the larger circle to create slits. Finally, insert the smaller circle and it's complete. There are two sheets, so I'm including one as a spare. One sheet has a faint black line on the back. I thought it might be from a pencil, so I lightly rubbed it with an eraser, but it didn't come off. Please refrain from purchasing if you are concerned about even slight imperfections, as this item has been stored at a private residence. Silent purchase and immediate purchase are welcome. To prevent any trouble, please read my profile before purchasing. Thank you.