Specifications

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9. Offsetting a Line or Area Feature
For the same reasons as a point feature (see previous
page), you may need to use the offset utility to map a line
or area feature. By combining the receiver’s position with
the direction and the distance to the feature, ProMark3
will automatically calculate and record the location of the
feature.
To input an offset for a line or area feature, assuming the
Feature List screen is now displayed, do the following:
- Tap one of the line or area features available from the
open feature library.
- Tap the Log button to start logging the feature.
- Tap Options and then Offset. This displays the Line or
Area Offset screen on which you should enter the fol
-
lowing parameters:
Direction: Location of the feature with respect to your
actual path. To input a value for Direction, tap the down
arrow and then tap the desired option (Right or Left).
Press the down arrow to move the cursor to the next
field.
Horz. Distance: Horizontal distance to the feature from
your current position. To input a value for Horz. Dis
-
tance, press ENTER and type in the new value from the
keyboard or the on-screen keyboard. Then press
ENTER again.
Press the down arrow to move the cursor to the next
field.
Vert. Distance: Vertical distance to the feature from your
current position (“0” if the feature and yourself are at
the same elevation -on a flat area). To input a value for
Vert. Distance, press ENTER and type in the new value
from the keyboard or the on-screen keyboard. Then
press ENTER again.
Line or Area Offset screen
On the left On the right
Line Area
Visual estimation for horz.
& vert. distances is usually
good enough in terms of
accuracy.