Leica iNEX User Manual page 89

10.2.2 Overlap
AutoSPRAY controls the overlap tolerance which is used to decide when to
turn valves on or off. When set to its default of 0%, the system will turn
the valves on whenever any part of the sensed area has not been
sprayed. It is effectively the percent of miss that the system will tolerate.
If the value is increased, the system will not turn the valves on when
traversing over a small missed area such as a line between two spray
swaths.
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iNEX User Manual