530-579 Iris, 1.5x magnifyer & cylindrical lens

Same as the 570-579 but without the 6-colour filter
A revolutionary iris and magnifyer assembly which permits correction of diagnosed axis and sphere problems in the shooter's eye
For more information on the corrective part of this unit please refer to our description of 579
1.5x magnifying diopter with the range -4.5 to +4.5 dpt
User manual and assembly instructions are included