Bright field magnifiers are fascinating and are also known as hemispherical magnifiers. They gather light from all sides and their symmetry focuses the image in the centre. You gently slide them accross the surface you wish to view. They are also used as stylish paperweights Our bright-field magnifiers are not made of glass, but polished solid acryl meaning they are harder to crack. Available magnification: 4x or 3.5x Viewing field diametre/magnification 50 mm / 4x 65 mm / 4x 80 mm / 4x 95 mm / 3.5x Delivered in black pouch for safe storage