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E.
Achromatic/ Aplanatic Condenser
@
Dovetail Slide.
@
Knurled Ring. Permirs adjustment of the aperture iris diaphragm.
@
Graduated Aperture Scale.
The scale, engraved twice symmetrically,
indicates numerical aperture values corresponding to the opening of the
aperture iris diaphragm.
@
Slide Lever.
This lever allows the center of. the aperture iris diaphragm
t o be moved
off the optical axis and rotated through 150°, thus obtaining
oblique illumination.
(See page
19.)
@
Clamping Screw.
Permits simultaneous locking of slide and rotation.
F.
Condenser Mount:
G.
Auxiliary Lenssystem
Dovetail for Condenser Slide.
Condenser Clamping Screw.
Condenser Centering Knobs.
Condenser Height Adjustment
I<nob.
Dovetail Mount for Auxiliary
Lens
System.
Mounting Bracket.
Clamping Levcs.
Stop Pin
for
Auxiliary
t e n s
Systcm.
a
Mounting Dovetail.
@
Clamping Lever.
@
Stop Pin. {Provided beneath the
dovetail)
@
Lens Rotating Knob.
The knob
is
used t o reverse the auxiliary
lens system according to the
objective magnification in use.
@
Knurled Ring.
To adjust the
@ '
field iris diaphragm.
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