26
4
Attaching the objectives
A
I
III
II
4x
IV
Illustration 005: NIB610 - Attaching the objectives to the nosepiece.
Use the coarse focusing knob (I) to turn the
quintuple nosepiece (II) to the lowest position.
Screw the 4x objective (III) into any free space
on the nosepiece from above the stage.
Turn the nosepiece one unit clockwise by
hand and repeat the procedure for the next
higher magnification until all objectives are
mounted.
The following objectives are included in
delivery:
4x: infinity planachromatic objective (NIS60)
10x,20x,40x: planachromatic phase
contrast objective (NIS60)
Protect the free opening on the objective
nosepiece with the black protective cap (IV).
The objectives snap into place with
an audible “click” when they are po-
sitioned in the beam path. Only in this
position does the lighting come on.
Before each use, check the front
lens of the objective for dirt. The clos-
er a contamination is to the object or a
camera sensor, the greater its effect on
the visual or recorded image. There-
fore clean the objectives regularly.
NIB610/NIB620
3
NIB610
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