Bestscope International Limited
BS-2090
Figure 7
Figure 6
Figure 8
2-2-4 Installing the objective
（
Fig. 6 and
Fig.7
）
1. Turning the coarse fusing knob
①
like the figure
shows till the nosepiece get to its lowest
position.
★
For ensuring the safety of the
instruction on transportation, the nosepiece is
located in the lowest position and the tension
adjustment collar
②
is adjusted in a
appropriate tight tension while leaving the
factory.
2. Screw the lowest magnification objective on to
the turret from the nearside, then turn the turret
clockwise, mount other objectives according the
magnification sequence of low to high.
◎
Mount objective like this way will make the
change of magnification to be very easy in using.
◎
It also can install the objective through the stage
opening.
★
Clean the objective regularly, the objective used in
the inversed microscope is very sensitivity about
dust.
★
Do cover all the unused holes with turret dust
caps
③
, to prevent the dust and contamination
entering inside.
★
When operating, use the low magnification
objective (4X or 10X) to search and focus the
specimen at first, then replace the higher
magnifications if necessary.
★
When replace the objective, slowly turning the
nosepiece until you hear “clicked”, that means
the objective enter into the right position—center
of the light path.
1
3
1
2
