1. The wall eye chart features a large letter or symbol at the top with progressively smaller letters toward the bottom, down to 20/20 or better. 2. This eye chart is designed to help measure visual acuity from a distance of 20 feet. 3. Made from high-quality materials, the chart can be easily cleaned if it becomes soiled. 4. Constructed with thick PVC material, the chart is durable and resistant to folding, unlike paper. 5. The printed characters are clear and firmly adhered, reducing the risk of peeling. Specifications: Size: 22 (height) x 10.8 (width) inches, thickness 0.3mm Chart weight: 52.2g Color: White Material: PVC Package Contents: 1 x Eye Chart 1 x Eye-covering spoon (style shipped at random) 1 x Indicator stick 4 x Double-sided tape Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3cm.