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Pocket LED Lighted Magnifier



◆Fresnel lens(3)   


 
． What is the Fresnel lens ? (Fresnel lens)
． How many types of Fresnel Lenses available ?  (Fresnel lens)
． How to calculate the fresnel magnification?  (Fresnel lens)

|  1  |
   22 May   2013   Wed
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TEL : 886-2-2709-2137
FAX : 886-2-2709-8278
E-Mail : sales@magnifier.com.tw
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