The Byomic Reading Bar with Reading Line BYO-LL2560 2,5x160mm is a universal reading magnifier equipped with an integrated straight blue line. With the help of this blue line you can place the ruler directly under a line. The ruler has a 2.5x magnification. The lens of this handy magnifier is made of acrylic. Unlike a glass, acrylic is lighter in weight and has a higher scratch resistance.