geo-FENNEL FL 510HV-G TRACKING M Mode D'emploi page 55

MM INDICATION
If the reference level of the receiver is e. g. 18 mm below the laser beam this height difference will be
displayed by an exact numerical value (see the left diagram).
The laser beam is
exactly on-level.
further examples
The laser beam is
19 mm above the
reference point
(move the receiver
up).
The laser beam is
35 mm below the
reference point
(move the receiver
down).
EN
55