For use without prescription glasses. Binocular eye loupe mounted in half-frames, no heavier than ordinary eyeglasses. The half-frames stay in place; just lower lenses for magnification and flip up when finished. Lens is optical quality injection-molded acrylic treated with abrasion-resistant coating.

Also available in clip-on style for use with prescription glasses (as "Clip-On Telesight").

Note: Focal distance is measured from the eye.