Hand-held Magnifiers Manufacturers

Hand-held magnifiers are convex (plus) lenses that increase the size of a retinal image and bring the image into focus. It provides maximum magnification when positioned at its focal distance with respect to the material to be recognized. The focal distance in centimeters is determined by dividing the dioptric power of the aid into 100. Most hand-held magnifiers are portable; therefore, these are convenient for shopper, students, and technicians who need an aid for spotting rather than for the continuous reading of textual matter.