Abstract: Exemplary systems and methods for generating fluid distribution system solutions are provided. A user interface is provided that enables user to make selections relating to components and/or characteristics of a target fluid distribution system. The interface is configured to provide feedback based on user selections and verify that the selections are compatible. Exemplary systems and methods are configured to verify the user input and generate a target fluid distribution system solution based on the input.

Abstract: Vegetation trimmers and methods for reconfiguring a trimmer are provided. A coupling mechanism permits reconfiguration of the trimmer between a first, e.g., trimming, configuration and a second, e.g., edging, configuration. The coupling mechanism may, in one embodiment, be used to couple a handle assembly with an extension tube. By rotating the handle assembly relative to the extension tube, the trimmer is moved between the trimming and edging configurations. In one embodiment, the mechanism may apply a biasing force to the handle assembly relative to the extension tube. The biasing force tends to bias the trimmer towards and retain the trimmer in the desired configuration. To switch the trimmer between configurations, the operator may impart a twisting force between the handle assembly and the extension tube where the twisting force is sufficient to overcome the biasing force. Optionally, a longitudinal force may also be applied before or during the application of the twisting force.