In RUBY a well as all other games it evolves starting a lv. 30 into magneton. If you need any more info on any Pokemon at all just go to this website:
http://bulbapedia.bulbagarden.net/wiki/Main_Page
I hope it helps.
In lvl 30
Weezing does not evolve in Pokemon Ruby.
it doesn't evolve in Pokemon ruby.
in lv. 30.
Nosepass doesn't evolve in Ruby, sorry.
Corpish will evolve at level 30
It will evolve at level 48
Spinda does not evolve.
Minun does not evolve.
it can't evolve
Altaria does not evolve.
It doesn't evolve.