Write braille onto standard 8.5 inch by 11 inch (22 centimetre by 28 centimetre) paper, using this standard aluminum 4-line, 28-cell slate.
- Unit measures 10 inches by 2 inches (23 centimetres by 22 centimetres by 5 centimetres)
- Unit measures 10 inches by 2 inches (23 centimetres by 22 centimetres by 5 centimetres)