ITEM NAME:DIY Telescopic Periscope Handmade Technology Kindergarten Children Toys #gib Store Home Promotion Hot Item Add to Fav.Fold the periscope, fold the paper periscope along the edge line of the paper, and stick the joint with double-sided adhesive. Paper periscope is to use two mirrors to bend light to the eye after two reflections, so as to see the underwater world.
