The new selection Filter tool available for QCAD pro 3.4.4 takes all the hassle out of selecting equal length lines
Here in my example I need to delete all lines of a certain length.
1. First select the line.
2. In the Property Editor highlight and copy the line length.
3. Open the selection filter (View > Selection Filter G,F) or click the button in the widgets set.
4. Set up the Selection Filter correctly:
Entity Type - Line
Property - Length
Comparison - =(equal to)
and in the Value field paste in the 'copied' length from the Property Editor.
6. Now click on the 'Add to current selection' button.
All the same equal length lines are now selected.
Now I can delete/edit or modify them!