Made from semi-rigid, non-reflective, white plastic sheet with non-reflective black letters. Each chart comes with a set-up kit. Letter sizes: 60/6, 36/6, 24/6, 18/6, 12/6, 9/6, 7.5/6, 6/6, 5/6. The letter size is printed under each line. The DX charts have one 6/6 line. This chart is available for test at a 3 metre distance from patient . Chart size (DX version): 3 metres 260 mm x 100 mm Product References for the Single 6/6 line: (*Ideal for domiciliary and doctors rooms.)