4 Replacement lens plate set For Headband Magnifiers & Fits Optivisor 1.5x-3.5x

Lens #2 2x - 4 Diopter 10" Focal Length. Lens #3 2.5x.- 5 Diopter 8" Focal Length. Lens #4 3.5x.- 10 Diopter 4" Focal Length.

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