Check the listing for details. 18.5" LED Display Eye Chart Micro Projector 1m-6m Visual Acuity Optometry Exam. Condition: New, Made in China. Listed at 299.00 USD. *Super thin and light design, high definition scheme, the professional digital picture processing technology, fast switching, easy to operate. *Measure accuracy with the distance from 1.0m to 6 m and the smallest step 0.1m *Offering single display function, which includes eight rows and three lines charts. *Offering fully charts, which includes the total forty-five charts, international C word, International E word, Children. *Figures, Astigmatism, Binocular balance and so on. *Sitting type installation&wall-hung type installation both available, which enable the installation convenient and maintenance easy. *High resolution LCD screen and small dot pitch(0.3mm)adopted, which ensure the clear image seen.