Alimed Flatscreen LCD Monitor Magnifier 19" This Lsiting Is For Monitor Magnifier For 19" Regular LCD Monitor Qty : 1 This magnifier measures 16 1/2" Wide and 14 1/4" Tall. This 1.5X Fresnel magnifier fits over most 19" widescreen flat panel LCD monitors for desktop computers. This is designed for a regular 19" screen which is measured diagonally.