How to distribute nodes along a line ?

Hello,

First, excuse my bad english. I write from Belgium and english is not my mother language.

My question :

I want to put on a line, polyline, spline, ... several nodes respecting a distance between each node or respecting a number of nodes on the hole line, polyline or spline. For example, I want to put nodes each 2.5 mm along the line or I want to put 10 nodes at equal distance one of the other along the line.

So I can use that nodes to align other objects in most precesion.

How can I do that ?

Thank you.