3x Stand Magnifier 2" X 4" Rectangular Aspheric Lens In A Prefocused Stand For Easy View

Aspheric magnifiers, unlike spherical magnifiers, provide an "orthoscopic" image. Our aspheric lenses are shaped with a variant radii calculated to produce a sharp image right to the edge of the lens. This allows for distortion-free viewing over the entire lens area with greater magnification than is possible with a normal spherical lens.