The transparent glass sheet is made of high-quality acrylic material, which has good toughness and is not easy to break. The drawing board adopts the principle of optical image processing. Through the glass plate, the drawing image can be reflected, which is convenient for tracing. You can open your favorite photos on your phone and turn them into sketches, then start drawing. This holder is easy to assemble and supports most common phones and tablets. Helps develop hand-eye coordination and basic drawing skills. Acrylic Drawing Projector, 20*13.5CM Optical Sketchpad drawing tool helps develop hand-eye coordination and skills. Basic drawing skills to protect your eyes. Suitable for children, students, adults, beginners, anime lovers, painting enthusiasts. Content: excluding mobile phone and A-size paper. Drawing projector Principles of optical imaging The image is reflected and projected onto an optical projection work surface. At the same time, the lens has two sides and the projected effect on different surfaces is different. drawing projector Attention: Before use: tear off the protective film on the front and back of the board. Image brightness: it is better to see the lines clearly. Use it in a well-lit area. If you are not comfortable, lower the brightness. Make sure the paper is flush with the bottom of the material. Protection plate: put back in the bag after use. drawing projector