Small Gadget for my Lab

Too much wind today, impossible to work outside, so go to the workbench.

to built a small gadget quickly made for my little lab.
My multimeters measure at 10A DC Max, and nothing to go higher for the setting of my LDMOS amps. So, Hop! Go... search into the drawers of 4 displays (although I do not like the digital) and 2h later it's OK. et VOILA !