LEITZ DIALUX 20 - Inserting and Changing Light Rings

Inserting and changing the light rings
All the light rings are marked for the
required
position in the light-ring turret
and for the condenser tops to be used
for them (see Fig. 35).
Release the Alien screw (2mm) so that
the head of the screw is flush with the
knurled screw of the light-r ing turret.
Push the
light ring against the sprung
holding pin to remove or insert it.
Screw the two centring screws in far
enough for the light ring to be roughly
central (cf. also Fig. 37) .
The
light -rings must be inserted always
in the aperture opposite their position
indication (Fig. 36).
The
aperture opposite the position in-
dication "H" remains empty, and there-
fore has no centring screw .
Fig. 36
Objectives, rotary turret and focusing telescope
1 Ph ase co ntr ast objec tives on the revolving
nosepiece
2 Lig ht-rin g turret
3 Light ring
4 remains e
mpt y for brightf ield
5 Eyelens
6 Clamping ring
7 Focusing
telescope
8 Centring screws for light rings.
22959 - 513 R
24
1 2
s .
D
22020·513 R
Fig. 35
1 indicates the pos iti on of th e li ght ring in th e
turr et ( OF must be inserted in pas. 5)
2 associa t ed conde nser top, e.g. S 1.1
Inserting the light-ring turret
Turn
in the condenser top of the UK
condenser. Release the fixing screw in
the bottom part of the cond e nser (Fig.
39).
Pull the dust cap out of the con-
denser . Insert the light -ring turret (Fig.
38) so that the light rings can be drop-
ped into their apertures and fixed with
the fi xing screws (Fig. 39).
F ig. 37
Fig.
38
Fig. 39
22018 · 512 R
22974 -512 R
25