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Note on Measuring:
} Measuring is usually performed with the condenser's top-lens swung out and the aperture iris
diaphragm stopped down. If it is required to maintain brightness and resolution, the top-lens should
be left engaged although measuring accuracy will decrease.
} When measuring retardation, backlash error may occur when the compensator knob is rotated (U-CBE,
U-CTB, U-CBR1, U-CBR2). Accordingly, keep the rotation direction always uniform. If the knob is rotated
too far, turn it fully back and restart rotation by keeping the direction uniform till the measured portion.
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Adjusting the Extinction
Perform the cross-Nikol adjustment and the eyepiece cross
line alignment as described in the instruction manual for the
polarizing microscope (BX53/BX53M-P or CX31-P).
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