Leica Biosystems RM2235 - Manual (Page 21)

19 Leica RM2235
5. Operation
5.1 Operating elements and their functions
Fig. 13
The section thickness is set by turning the ad-
justing knob (33) at the front of the microtome on
the right.
The adjusting knob has a notch for each value
that can be set.
Setting range: 1 - 60 µm
from 1 - 10 µm in 1 µm increments
from 10 - 20 µm in 2 µm increments
from 20 - 60 µm in 5 µm increments.
The section thickness set in each case is dis-
played in the window (34).
The selected section thickness (on the scale)
must agree with the red pointer (38)
5.1.1 Section thickness setting
33
38
34
5.1.2 Coarse driving wheel
The instrument can be ordered with clockwise or
counterclockwise rotation. The given direction of
rotation means "forwards" and relates to the feed
movement of the specimen towards the knife.
The coarse motion serves for a fast horizontal
forwards movement of the specimen - towards
the knife - and backwards - away from the knife.
When reaching the rear/front end positions, the
coarse driving wheel can only be turned with
difficulty. In the front end position, no more feed
motion takes place.
The coarse driving wheel also turns
during sectioning. Therefore it must
not block whilst the handwheel is be-
ing turned during sectioning; other-
wise, no feed motion can take place
and thus also no sectioning.
Fig. 14