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11 Installing the Perimeter Wire
11.3 Measuring Wire Clearances with the 
iMow Ruler
The perimeter wire (1) can be routed next to surfaces such 
as patios and paths as long as the surface is flat, level with 
the grass, and allows the robotic mower to travel unimpeded 
by obstacles. If necessary, the robotic mower may travel 
with one rear wheel outside the mowing area.
The maximum height difference between lawn area (2) and 
obstacle (1) must not exceed 0.4 in. (1 cm).
The iMow Ruler is designed to help you maintain the proper 
the clearances when installing the perimeter wire.
To ensure that the robotic mower runs without contacting 
any obstacle, even around corners:
► Keep a minimum clearance of the length of the iMow Ruler 
(a = 11 in. (28 cm)) from obstacles.
► If routing the perimeter wire in confined areas, keep a 
minimum clearance of 17.4 in. (44 cm), @ 11.5.
Minimum distance to be maintained between an 
obstacle and the perimeter wire.