1 x Portable Slit Lamp Microscope KIT. Slit width: 0-10mm continuously adjustable. LEDs are used as a source of illumination. Slit height ：￠ 0.2 ，￠ 0.3 ，￠ 5 ，￠ 10mm. Slit illumination angle: ±30° horizontally.
eBay