EM-3 3x Single lens Educational Magnifier Ideal Low Price Magnifier Option for Classrooms, Optical grade 4.5x educational magnifier with 1 3/8 inch lens. Made in USA
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\n- - Lens Power/Magnification - 3x
\n- - Lens Diameter 1 3/8"
\n- - Lens Diopter 8
\n- - Lens Focal Length 4"
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