2 .
3 .
Spirit level
Air bubble
4.5 Attaching the length tape measure
2. Undo the thumbscrews.
4 .
3. Align the scale by turning the foot screws.
The air bubble in the spirit level must in the exact
centre of the circle.
4. Tighten the thumbscrews in the direction of the
arrow.
The foot screws are secured against adjustment.
The scale is supplied with a length tape measure. To
affix it, proceed as outlined below.
1. Thoroughly clean and disinfect the tray (see
"Hygiene treatment" on page 73).
2. Peel the protective film off the rear of the length
tape measure.
3. Affix the length tape measure parallel to the top
edge of the tray on the retaining wall, as shown in
the adjacent illustration.
NOTE
Alignment of the scale must be checked and
corrected if appropriate every time it is moved.
NOTE
The tray must be clean and dry before you affix
the length tape measure.
Before you get started ... • 59
English