Instrument Components
1. Rotation Adjustment Knob
15. Cylinder Power Scale
2. Mounting Bracket
16. Cylinder Axis Reference Scale
3. Tilt Clamp Knob
17. Cylinder Axis Indicators
4. Forehead Rest Knob
18. Cylinder Axis Scale
5. Spirit Level
19. Weak Sphere Dial
6. P.D. Knob
20. Sphere Power Scale
7. Vergence Lever
21. Strong Sphere Control
8. Auxillary Lens Scale
22. Leveling Knob
9. Corneal Aligning Device
23. P.D. Scale
10. Rotary Prism Unit
24. Reading Rod Holder
11. Cylinder Power Knob
25. Reading Rod Clamp
12. Cylinder Axis Knob
26. Forehead Rest
13. Cylinder Power Knob
27. Spring Clip
14. Cross Cylinder Unit
