Currently I'm using

  private void m_timer_Tick(object sender, EventArgs e)
  {
      m_gaugeR1.Needles[0].Angle++;
  }

as a test, but needle does not move. In debugger, Angle changes but none moves in screen.

Circular gauges does not have Text or Value or other standar properties (like  Digital ones), and the only property or function I've found to move the needle is Angle...

I think you are looking for the Value property contained in the Scale object.  Try something like:

m_gaugeR1.Scales[0].Value++

Yes!

It works.

Thanks a lot.