Remember Edmund Scientific, the perennial advertiser in the back of science magazines? They sold lenses in addition to all kinds of scientific knick-knacks and basement experimenter supplies. Anchor Optics is a division of Edmund’s upscale optics company, selling mostly to professionals, but at a discount. They’ve got loupes and microscopes, but also Fresnel lenses, commercial grade front-side mirrors, laser parts, optical bench gear, prisms, and advance fiber optic stuff — just about anything optical you can imagine at good prices, Anchor sells Edmund’s surplus or “seconds” — but only second in some cosmetic or inessential way. If you need a lens or an optical flat mirror of a certain size, you’ll probably end up here.