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Berens Single 37mm Square Prisms

Berens Single Square Prisms
Berens Single Square Prisms
Item# Berens
$9.68
Power in Prism Diopters: 

Berens Loose Prisms are nearly indestructable, and one fourth the weight of glass. These individual square prisms will not chip or break. Ideal for patient prism exercises. Power range in prism diopters from 0.50D to 50.00D.