thank's for the fast responce I did more tests and it appear that the differance between the indicated lenght of the stroke and the distance between nodes is equal to the width of the line even with straight ending. I'm not sure that my observation is due to a rounding effect as related in reference...

I'm producing technical like drawing with Inkscape and i have the following problem. If: 1) i draw a Straight horizontal line with :tool_pen: tool 2) the indicated wide is shown as 245.432 mm 3) i change is length by modifying is wide in the tool's control pallet (ex : 200 mm) 4) the new wide will b...