The size of Reading Ruler with horizontal bars is 19*7cm (7.5*2.8 inches), and the reading lines can helps you track one row at a time to make you focus more on reading. The size of A4 Dyslexia Overlays is 29.7*21cm (11.7*8.2 inches), perfect for textbooks, worksheets, computer screens, etc. You can cut Dyslexia Overlays to the size you need to meet your different needs. Such as for reading, LED lights, stage, party decoration, etc. Dyslexia overlays are made of high-quality PET material, flexible and not easy to deform, more wear-resistant, clearer and smoother than PVC material. It's covered with a protective film to prevent scratches, and has a matte side and a glossy side, perfect for long hours of reading.
eBay