Truly the finest magnifiers Bausch & Lomb has to offer, Hastings Triplet Magnifiers incorporate three separate glass lenses, bonded together to form a compound lens to provide sharp, very distinct magnified images without distortion—even under 14 and 20 power magnification. A swing-away, nickel-plated case protects the lens and serves as a handle. Focal Distance: .8 inch (2 cm) Power: 14 Diopers: 56D Lens Diameter: 12.5 mm