Originally Posted by Trapezius
1200, 2000, 2800 is quite close what I measured. 2nd line beeing little more about 2400 and full compression 3000g.

I double check today when I go home.

There are many other types than linear springs. These seem to be decressive.

It was
1500g
2400-2500g
3400-3500g

Checked it mant times and with one spring it is half of it.