@ Linas - Thank you so much for the tip, that seems like a very usefull tool. I actually don't have feeler gauges, I use allen wrenches or 2mm picks for setting string action, and I set neck relief by eye... I'll buy this next. It's expensive tough.
@ Joshua - In my town there is a dude, an older blues player and he is doing most of the setups in town. But he is Guitar specialized (but he does also bass setups, for money I guess). He polished my bass that I talked about in my first post. There is another guy, he's a roadie at a kinda famous rock band (he's the only roadie in the band, he does guitars, bass and drums). There are 3 major guitar stores in my town. One of them works with the older blues player, the other one with the roadie and the third one with nobody (I believe). That means that besides the older guy, there is noone from who I could learn from... There are for sure others but they do setups for friends only.
So that may ( MAY ) be an oportunity for me to do setups for the 3rd shop I talked about earlier. I haven't asked them yet, because I have no experience (compared to the other guys). The question is : Should I try to make them an offer so that they eventually hire me? I don't want to do setups for money, just because I like to grow the value of instruments
I could tell them that I set 5-10 of their instrumets up for free, so they see what I can do (or can't). Should I try this? It's a challenge...
Regarding the Stroboflip, it's very expensive (200$ in the USA, and I live in Romania, where stuff is much more expensive, so I expect 250 EUROs). I think I'll buy a Korg DT 10, with kinda like 90 EUROs, I think it's better then my 20$ Boss TU 80.
Tools are expensive, I know, but I can't buy them as I need them, because I have to order them from the net, and shipping from the US is very much (I live in Romania... = like 30$ shipping, even for small stuff...). So maybe I'll order some stuff that I will eventually need, but I don't know what, maybe you can list here the tools that you use when doing setups.
I have a set of allen wrenches (both milimetric and fractional / decimal), a philips head screwdriwer (that will be soon replaced by a better one, with rubber grip), WD-40. I use guitar picks as feeler gauges (but I cannot measure neckrelief, I have to buy thinner picks) and I set action using allen wrenches (I start from 2mm on G, 2,5mm on E and go from there until it feels comfotable). I clean all poly bodies using Pronto furniture spray.
I noticed a nice tool made by Planet Waves - The bass string winder and string cutter, it's nice, but I have to check if the winder works for both types of tuners (vintage, like on Fenders, or Modern like on Ibanez SRs).
Other suggestions regarding the setup work and tools?
And, ahh, Thank you guys!
Starting out as a bass tehnician (setup/repair-guy) 
