Optika Italy POL-X Manual De Instrucciones página 9

Open the cover of the sample
chamber, and put the test tube
into the lens cone for measu-
rement. Then, close the cover
of the sample chamber with
bulb part of the test tube poin-
ting upwards. This way the air
bubbles can be stored in the
bulb part and the observation
and measurement will not be
affected. (Fig.8)
Adjust the focusing knob until
the triplex viewing aspect in
the viewing field becomes
distinct.
(Fig.9)
Rotate the scale knob until
the illumination of the viewing
field (the dark viewing field)
becomes identical. (Fig.10)
Read on the dial, through the
magnifying glass, the angle of
optical rotation. (Fig.11)
Page 9
Fig.8
Fig.9
Fig.10
Fig.11