Eye Chart box

The frame of box is made of special high- strength aluminum-alloy. It is light, stiff and never distorted. The inside and outside of the box are both coated by electric- static spraying powder, it is beautiful & durable.
1. Four corners of box are connected with good quality brass plate, the surface is decorated with ABS plastic plate.
2. The visual chart plate is adopted with import polymethyl methacrylate plate, never faded.
3. It can normally work in voltage 150~260V.
4. The light box has two specifications of examination distance: 2.5m and 5.0m