Inkscape extension for Line-us developed by Anatoly Besplemennov
The plugin is available from the Inkscape plugins repository
The plugin uses machine co-ordinates and does not do any scaling, so refer to the drawing space diagram for details. Note that the Inkscape document units must be set to pixels (File/Document Properties/Cusomt Size/Units). For reference a sample drawing is included here.
The plugin appears in the extensions list as LUS