How to Measure magnificationHow can I see how strong a magnifying glass is?I bought this magnifying glass http://www.liangdianup.com/inventory/189901.htm and I wantto know how to test it to see how strong it is. I hear a lot of people talk aboutmagnifying and how strong the magnification is, but I would like to know the truemagnification of my magnifying glass. I have a few of them and some seem stronger thenothers. How can I rate these? How can I pin a correct number on mine? How do the companiesthat make these come up with these numbers.

Navjyot Kalra , 10 Years ago

Grade 10