13. Illumination
adjustment screw.
14. Column
8. Stage clips
2. Eyepiece holder
tube
4. Head
15.
Incident
illumination
switch (I)
16.
Transmitted
illumination
switch (T)
12. Focussing
knob
10. Diopter
corrector
1. Eyepiece
17. Base
11.Head locking screw
5. Objectives
6.
Incident illumination
7. Switch to ON
3. Prism housing
9. Stage
S-20-2LOO
-2-