Idea is simple. Significant portion of my projects is heavily biased
towards pinching, so specific training might be of significant help here. See pictures to give you the idea of construction.
It consist of piece of plywood and ten furniture legs (bought in Castorama, specialized climbing training equipment shop).
As for training method I settled on dead hangs, warm up followed by ten series with three minute rests.
Progress so far was exceptionally fast, let's see how will it translate to rock climbing.