Okay I got this one.
![](https://ae01.alicdn.com/kf/H5ab3923922084824aa78ba98123ddc1cA.jpg)
That hole on the handle inspired me. ![Confused :-//](https://www.eevblog.com/forum/Smileys/default/confused0024.gif.pagespeed.ce.5xOqKkq0Co.gif)
The china boat arrived today here in Germany, surprise suprise!
Now I understand that hole in the handle is not to put a finger in it, but is a sort of spring STOPPER so you don't cut into the copper.
Actually clever made, when you are close to the copper the resistance increase (the hole squeezes) and you have a fine control...
It's time now to use it and see how it goes in real life.