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Leica DM750 Manual 36
Adjust the eyetubes
1. Adjust the tubes to your interpupillary
distance. Fold or unfold the eyetubes to
decrease or increase the distance between
the eyepieces until you see one illuminated
circle.
The viewing tubes maintain a constant
tube length for all interpupillary settings.
This means that a change of interpupillary
distance does not affect parfocality, magnifica-
tion, or calibrations that depend on magnifica-
tion.
Leica EZ Viewing Tube
Ϙ If you are using a Leica EZ viewing tube,
which has the eyepieces integrated with
the eyetubes, no additional adjustments
are necessary. Be sure you are wearing your
eyeglasses or contact lenses.
Ϙ If you have a Leica DM750 with stan-
dard illumination (without Koehler field
diaphragm), continue with the "Oil Immer-
sion Technique" section on page 40.
Ϙ If you have a Leica DM750 with Koehler
field diaphragm, continue with the "Koeh-
ler Configuration" section on page 38.
Standard Viewing Tube with Two Fixed
Eyepieces
Ϙ If you are using a standard viewing tube
with two fixed eyepieces (no focusing
eyepieces), no additional adjustments
necessary. Be sure you are wearing your
eyeglasses or contact lenses.
Ϙ If you have a Leica DM750 with stan-
dard illumination (without Koehler field
diaphragm), continue with the "Oil Immer-
sion Technique" section on page 40.
Ϙ If you have a Leica DM750 with Koehler
field diaphragm, continue with the "Koeh-
ler Configuration" section on page 38.
Standard Viewing Tube with One or Two
Focusing Eyepieces
If you are using a standard viewing tube with
one or two focusing eyepieces, you need to
make some adjustments.
1. Set the focusing eyepieces to "0".
Viewing Tube Adjustment