torque key required for 6nm

Cymru Boy
Cymru Boy Posts: 9
edited December 2013 in Road general
Basically my Stem and a few other parts of my Scultura 904 Carbon have a torque recomendation of 6nm. I recently turned my stem round on the advice of my LBS as I was getting pain in my shoulders.

Anyhow, I have re tightened the stem bolts but havent a clue if they are tight enough or too tight as I did it by feel. As such I have been looking for a torque key that does up to 6nm. The only one I can find is this one which is made by Giant. However for some reason they only seem to be avalable in the US?!

So I am wondering
1) is there an alternative that I can get from here in the UK?
2) Ritchey do one identical but it is only rated to 5nm, will this make a difference in the real world?

I know I could buy a mini torque wrench but these range from £35-£150 and as most of the servicable bits on my bike are rated at 6nm I only really need a torqkey?

thanks in advance for any advice