Multifunction Puzzle Ruler
Size: 20 x 8cm(1cm=0.393Inches)
1.First hold the ruler with your left hand, fixed on the painting paper.
2.Select any external gear, put into the inside of the tooth plate to make the meshing, can not be separated from the teeth and jump; right hand holding pen inserted into the pen perpendicular to the paper, in a certain direction of rotation, you can draw a beautiful curve pattern.
1 x 20cm Spirograph
3 x Motif(A.B.C.)
1.Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid.
2.The colors may have different as the difference display, please understand.