Trimming The Specimen - Leica RM2125 Manual

5.5 Trimming the specimen

34
Leica RM2125
32
37
Fig. 14
33 1
15
2
Fig. 15
Coarse feed wheel (37)
The coarse feed is used for fast horizontal
specimen movement - forward, towards the
knife - and backward, away from the knife.
The instrument is available either with coarse
feed (37) in either clockwise or counterclock-
wise sense of rotation. An arrow (32) indicates
the sense of rotation.
When the coarse feed wheel is rotated in the
direction of the arrow, the specimen advances
towards the knife.
Once the specimen block has reached the
rear or front limit stop, the coarse feed wheel
becomes difficult to turn; in the front limit posi-
tion, the specimen feed mechanism stops
working.
.
Trimming the specimen with the coarse feed
• Unlock the handwheel (push handle (1) inward
or release brake mechanism via lever (2)).
• Turn coarse feed wheel (31) to bring the
specimen gradually closer to the knife. At
the same time, turn handwheel (15) to trim
the specimen down to the desired level
where you want to start sectioning.
Trimming the specimen via the section thick-
ness selection
• Select a section thickness appropriate for
trimming (e.g. 50 μm) with the section thick-
ness selection knob (33).
The thickness selected shows through win-
dow (34).
• Turn handwheel (15) until the specimen has
been trimmed down to the desired level.
5. Operation
21