3D ruler 1.Customerized design, 2.Competitive price, 3.High quality 4.see various image at different angle. 3D rulerFeatures:1) Novel cards that can see various image at different angle.2) A lenticular image has two components; a printed image and a lenticular lens screen through which the image is viewed3) Lenticular images can convey the illusion of 3D and/or video motion4) Application on ...