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11.3 Supplementary Manual for Polarization Model 78904-33 (cont.)
Introduction
This manual is meant as a supplement to the standard
manual and only describes the functions and use of the
polarization elements of your microscope.
Basic controls
Stage Rotation
When the stage rotation clamping knob (1) is loosened,
the stage can be rotated 360° horizontally.
Using the Bertrand Lens
By revolving the Bertrand lens dial (3), the Bertrand lens
can be selected. At the “O” position, the lens is removed
from the light path. At the “B” position, the lens is
engaged.
Focusing the Bertrand Lens
During conoscopic observation, to focus the conoscopic
image, turn the Bertrand lens focusing ring (4) slightly
until a clear interference image is obtained in the
eyepiece.
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