8.3" x 11.75" LARGE 3X Fresnel Lens FULL PAGE Magnifier -- Solar Oven/DIY Projection TV PLANS (1 pack PREMIUM GRADE Large Lens)

This things really works. I started a fire with it.I just wish the man who invented it would have recognized early on that he was going to be an inventor and that he should change his name to something cooler.Like "Orlando Lens" or "Lily Lens" "Alvarez Lemsor ... Oh well, I guess we're stuck with Fresnel.

Main reason I got it. In 71 degree weather, it lights up a chip pile in a flash. I will be using it to make a solar still for water and so far it looks promising with one more added. Nice add to the trailer for starting fires. You won't be disappointed in that area but as a magnifier, it is a little less than desirable.It is ok on print for instructions, books but finer print like on a USB charger, (what I tested it on) it isn't clear enough to make out the info. Still worth the money to me.

I ordered these because it seems to me that whenever I need one to read small print when I'm out somewhere, I don't happen to have one in the bag that I'm carrying with me at the moment. So now I can stuff one in every bag I've got to have one at the ready whenever I need it. They do the job nicely. The text is bigger and more than clear enough for me to read whatever I need to read. I'm very nearsighted and I'm a contact lens wearer, and with my lenses in, reading small print is out of the question without either reading glasses or a magnifier. And frankly the magnifier fits it my purse much more easily than a bulky pair of reading glasses. So these are perfect for when you're on the go. I recommend keeping each one in the little plastic sleeve it comes in to protect them from scratches because to offer a 10 pack at that price, naturally the material they're made of is not as substantial as you'd find in magnifiers of this type that are sold individually. But they're still a great deal if you're looking to keep multiples stashed in various places so you don't have to go looking for them.

Used it for a coding project where the text could not be magnified. Made it extremely easy to see smaller text.

Works great a s a magnifier and an emergency fire starter. Late afternoon sun requires a near perfect focal point.

VERY GOOD

Really quite something, I would say this is quite a modern marvel and I'm amazed I have only just recently discovered what a Fresnel lens is and that it exists. Even auto correct red-lined the word Fresnel while writing this review, goes to show how unheard of they are!Anyways this thing lit up GREEN grass the first time I tried it in full sunlight. Wow. Probably the single best fire starter for survival I've ever came across, and the possibilities for other uses are up to your imagination. Super lightweight, super cheap, VERY durable and bendable, and incredibly powerful, so much that you really have to make sure not to leave this lying around on a sunny day. Definitely not a toy for kids or carelessness. All in all exceeded my expectations and really amazing little device!

One inch of a corner cracked and broken. Will try and use it anyway. Should have better packaging for mailing.