Thanks Martin!
A picture or in this case, a drawing, says more than words!
Just make the loop and stick the cone in. This will lock the indicator to the leader and when the leader is pulled, the cone will be pulled out and both cone and indicator slide down the leader.
The cone , in my case, is cut from Finnpippette, pipette-point 50-200micro liters from Sarstedt
www.sarstedt.com . You probably find other suitable material elsewhere too
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