Bariatric Therapy Step 24 X24 X6 Wheelchair-Transport Accepted by leading authorities as Surgical Headcovers Orange and black print Style:1 Pair (Left & Right) 7212234

Bariatric Therapy Step 24 X24 X6 Wheelchair Transport Accepted by leading authorities as Surgical Headcovers Orange and black print Style:1 Pair (Left & Right) 7212234 Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red green blindness each in two forms complete and incomplete * Includes four special plates for tests to determine the kind and degree of defect in color vision * Makes use of the peculiarity that in red green blindness blue and yellow appear remarkably bright compared with red and green * Color plates encased in specially designed album type books for ease of handling * Detailed instructions included Battery Module * Optional Accesorie for the following items: CHAT2763 CHAT2786K CHAT2760K CHAT2788K CHAT2793K CHAT2797K CHAT2791K CHAT2795K *