Leica GPS1200 Series Technical Reference Manual page 1050

Reference Line
The fields available depend on the options chosen for <Heights:> and <Edit Height:> in
REFLINE Configuration, Heights page and <Task:> in REFLINE Choose Task & Refer-
ence Line, Reference page. The following fields are always available:
Description of fields
Field Option
<Point ID:> User input
<Antenna Ht:> User input
<ΔOffset:> Output
<Chainage> Output
GPS1200
Description
The point ID of the point to be measured.
The height of the antenna that is being used.
Changing the antenna height here does not update
the default antenna height as defined in the active
configuration set. The changed antenna height is
used until the application program is exited.
Perpendicular offset from the reference line/arc
measured from the reference point to the measured
point.
For reference arcs, <ΔOffset:>, <ΔArc:> and
<ΔArc-End:> values are always calculated so as to
produce the smallest <ΔOffset:> possible. To ensure
this the arc will be extended if necessary. Refer to
paragraph "Measure to arc - horizontal measure-
ments".
Chainage of the current position along the line/arc.
This is the chainage of the start of the reference
line/arc plus <ΔLine:>/<ΔArc:>.
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