gunther,
What a subject you bring up!. [Linked Image]
I've got 100's of tools, but most of all, I like my N series Duspol tester the most, just makes work all that much safer.
I've had the thing since I first got into the Electrical game and it has never failed me once, although you have to be careful not to stretch the cable between the probes.
Second to that, I like my Utilux Crimping Tool, it crimps from 10mm2 up to 350mm2!, good for all sizes of lugs, crimp sleeves that I use in my normal day at work.
People just can't get over the size of the thing when I am carrying it into a place to use it.
One guy in a new accountancy firm here in town, asked me "And just do you think you're going to do with that thing?!"
I replied "I'm going to crimp your lugs with it, Sir", my humour was lost on a guy like this!. [Linked Image]