The traditional H series tower illumination slit lamps from Keeler features quality design and leading technology. Our advanced design and manufacturing techniques give this Keeler Haag style slit lamp the advantage of stunning optical performance, providing customers with confidence in the quality, accuracy, and reliability. Traditional slit lamp with Keeler optics. Traditional tower LED illumination. 3 step magnification system (x10, x16, and x25) 8° converging eyepieces: 49 to 77mm. Slit Width - 0 to 12mm continuously variable. Slit Length - 0.2, 2, 3, 5, 9 and 12mm circle (1.8 to 12mm continuously variable), and 1mm square. Filters: neutral density, red-free, diffuser, cobalt blue, yellow, and IR heat-absorbing filter permanently installed. 0 to 180-degree continuous slit angle. The Traditional H series 3 drum slit lamps come with a 3-year warranty and are available in a unit or table mount configuration. Unit modules include a power supply, tabletop, and mounting post. Table modules include a power supply, drawer, and tabletop.