Reading Magnifier w Clamp and Desktop Base 4x
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Reading Magnifier w Clamp and Desktop Base 4x Details
Manufacturer: MaxiAidsBrand: MaxiAids
Product features:
- Makes reading, drawing, writing, handiwork, and precise instrument operation easy
- Easily assembled, 360° rotation
- 4x to 6x power magnification includes desk-top weighted base and clamp. Size: 7" x 9"
Customer Reviews of Reading Magnifier w Clamp and Desktop Base 4x
Customer Review: Fresnel lens
Summary: 1 Stars
If the title isn't enough...read on;
I'm starting to accumulate a number of these so called magnifying aids consisting of fresnel lenses. I wish the industry would stop stealing our money. Here, let me explain why...I'm cupping my hands beside my mouth so I can 'shout' as loud as possible...
FRESNEL LENSES WEREN'T DESIGNED TO MAGNIFY ANYTHING!!!
fRESNEL LENSES (as I remember reading) were designed for one purpose and one purpose only...focus more light to s single spot than standard magnifying glass would. It does this nicely...that's what it was designed to do...nothing else.
Magnifying glass is designed to magnifying an undistorted image...that's why your glasses are made of glass or hard acrylic (sp?) molded plastic. You'll notice NO EYEGLASSES ARE OF THE FRESNEL DESIGN.
Futhermore; NO TELESCOPE LENSE OR MIRRORS ARE FRESNEL LENSE CONSTRUCTED.
Read on; NO MICROSCOPE LENSES OR MIRRORS ARE FRESNEL LENSE CONSTRUCTED.
Why?
Because the scientific community knows FRESNEL LENSES ARE CRAP when it comes to undistorted images.
So, why is the manufactures using fresnel lenses instead of the 'just as cheap to mass produce' acrylic plastic molded magnifier? It's simple...they never use them and haven't a clue what they do.
So here is my bottom line...don't buy a fresnel lense product as a reading aid--it could destroy your vision. In additon...the acrylic plastic molded magnifiers use to be used in 'first telescope and binoculars lenses and mirrors--they worked just fine and probably cost less then the fresnel lense.
Final though...the reviewers saying the product doesn't magnifying are correct...I calculate less than 1/2 magnification--it's worthless.
However, for those of you who already own this junk...keep it. If you can find a full page magnifier NOT of the fresnel design--and you have a hacksaw--well, make your own.
Description of Reading Magnifier w Clamp and Desktop Base 4x
Makes reading, drawing, writing, needlework, crafts and viewing detail work easier. 360-degree rotation - easily position it exactly where you want it. Magnifies approximately 4x at a viewing distance of 13 inches. (Magnification will vary slightly depending on distance from subject.) Includes desktop weighted base and clamp. Lens Size: 7" x 9".Magnifiers
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