Large diameter but without invading my office she never leaves, this magnifier is of very good optical quality. No aberration, and used on the entire surface unlike many "magnifiers" plastic or dishes, so-called Fresnel lenses. The frame, it is very "Chinese". Less in luxury as in recycled tin can she still his mount birch. No broken after a year of loyal service and obviously not the slightest sign of weakness. Good overall product.
