Adscope™ 600 Cardiology Stethoscope, 1 Each Masks Accepted by leading authorities as Kendall Gauze-Sponges--Bandage

Adscope™ 600 Cardiology Stethoscope, 1 Each Masks Accepted by leading authorities as Kendall Gauze Sponges Bandage 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 Soft nose bridge Accessory kit includes additional Adsoft™ and standard ear tips Internal binaural spring construction reduces bulk and prevents kinking when folded without producing sound clutter