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Old Dec 6th 2008, 12:06 AM   #1
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Measuring magnification

How to Measure magnification
How can I see how strong a magnifying glass is?

I bought this magnifying glass Wholesale Magnifying Glass With Free Shipping From China Distributor and I want
to know how to test it to see how strong it is. I hear a lot of people talk about
magnifying and how strong the magnification is, but I would like to know the true
magnification of my magnifying glass. I have a few of them and some seem stronger then
others. How can I rate these? How can I pin a correct number on mine? How do the companies
that make these come up with these numbers.
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Old Dec 10th 2008, 07:05 AM   #2
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Originally Posted by hellogreen View Post
How to Measure magnification
How can I see how strong a magnifying glass is?

I bought this magnifying glass Wholesale Magnifying Glass With Free Shipping From China Distributor and I want
to know how to test it to see how strong it is. I hear a lot of people talk about
magnifying and how strong the magnification is, but I would like to know the true
magnification of my magnifying glass. I have a few of them and some seem stronger then
others. How can I rate these? How can I pin a correct number on mine? How do the companies
that make these come up with these numbers.
The angular magnification depends on how the glass and object are held, relative to the eye. Use a light source and focus the image until it is as small as it can go measure from the lens to the light spot.
Therefore, the smaller the distance, the more powerful the magnification.
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Old Feb 2nd 2009, 04:32 AM   #3
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mitch

even me i dont know about this.........sorry
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Old Feb 2nd 2009, 11:30 AM   #4
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first find focal lenth of lens
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