20 ft: Hand Symbol (8 Line) Chart CLIA Waived They have excellent strength and

They have excellent strength and durability yet are soft to the touch

convenient

for a more accurate measurement

deep penetrating heat for pain relief

reinforced rip-stop nylon for durability and include high-visibility markings

20 ft: Hand Symbol (8 Line) Chart CLIA Waived They have excellent strength and(9" x 14") Hand optotype chart for vision testing at 20 feet. Hand symbol visual acuity charts are great for testing preliterate children. May be wall mounted or used with illuminated cabinets (66003, 66004, 66016, 66090). Having only one optotype used in different directions, Hand symbol charts are similar to Tumbling E and Landolt C charts. Often used for preliterate children in school screenings, the child simply indicates which direction the hand