Interpupilary distance is adjustable between 52mm and 72mm. Paired super wide 20mm field of view eyepieces. Smooth operating quituple ball-bearing nosepiece. Vertical illuminator, intense 6V 30W Halogen light source. Full Koehler design for brightfield and polarization technique, with infinity tube lens, blue clear, green clear, yellow clear and polarizing filters in mount.
Electronic transformer is built into the microscope stand with intensity control.
Transmissive lighting systems are available as well. Coaxial low position coarse and fine focus controls graduated to 2 micron per division are fitted with tension adjustmentand safety autostop. The focusing range is 35mm. The movement runs in extra wide precision ball-bearing steel tracks. I Systems, Inc.