First it's so flimsy that it got a little crack in it before I'd even taken it out of the packaging. Second the scoring on it makes what you're magnifying a little blurry. I would have returned it had I not accidentally cracked it. Very disappointed.
My spouse needs reading glasses. This magnifier requires some distance to work so a casual reader is likely to have trouble using it. If possible get a frame to hold it away from the paper.