ITEM NAME:Electric Drawing Device Children DIY Science Experiments Kit Creative Gift #gib Store Home Promotion Hot Item Add to Fav.And drawing pen can move elliptically through connecting rods. 1 X DIY Electric Drawing Kit. An interesting parent-child toy: can close the distance between you and your children. the rotational speed of the disk changes the elliptical trajectory of the brush by changing the angle between the angle iron and the connecting rod, thus drawing various patterns.
