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If the edge is relatively flat, lay the
wire at RoboRuler distance II from
it.
If the edge is a drop or if the
ground is sandy/soft, use distance
III of the RoboRuler.
When the edge is a wall or a
bush, use distance IV of the
RoboRuler.
Keep a minimum of 1.2 m (4 ft)
if the edge of the lawn borders
water.
III
Min 1.2m (4ft)
II
> 5cm (2in)
IV