... projector 1)Well crafted 2)Competitive price 3)High quality 4)Fast available LCD eye chart projectorMuch thin, plastics coverMore fast ... .5M, 3M, 3.5M, 4M, 4.5M, 5M adjustable MAGNIFING POWER: 12X, 15X, 18X, 21X, 24X adjustable(distance 4m the magnifing power is ...