Hi there!
We just came into Basel with a one month baby. In Madrid we used to weight him every week in a paediatric scale in any "apotheke". After visit a few, here in Basel, it looks pharmacies dont provide that service.
Beside the paediatric office, is there any other place where we could control weight gain of our baby?

You can take your baby to the local Mutterberatung to have your baby weighed and also get any advice or ask questions:

http://www.muetterberatung-basel.ch/Frameset3.html

I'm afraid I can only find a link in German

They do speak mostly English though so you should be ok if your German isn't very good.

Good luck and enjoy your bundle of joy, they grow so quickly!!

EDIT: by the way it is a free service