Each Retinoscopy Rack Set contains four "racks," two plus and two minus sphere. Increments on the first rack are .50, 1.00, 1.50. 2.00, 2.50. 3.00. The second rack is comprised of 4.00, 5.00, 6.00, 7.00, 8.00, 10.00, 12.00. The easy carrying case is made of wood with a red felt and white silk lining.
List:
+/- 0.50D 1.00D 1.50D 2.00D 2.50D 3.00D 3.50D
+/- 4.00D 5.00D 6.00D 7.00D 8.00D 9.00D 12.00D
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