Yes. Its possible.
Rustboro city
you can catchas them with timer balls whene they are weak
I am pretty sure it is Rustboro City in the PokeMart.
Timer balls are sold in the rustboro city pokemart.
well; eventually after you progress in the game. they can be found in shops along with repeat balls ( note : it doesnt matter which store you go to )
Timer balls can be found in the Pokemart in Rustboro City
Where you battled the first gym leader
You can buy them at the Pokemon mart at the Pokemon league. I buy my timer balls, heal balls, etc. at the Pokemon mart in canalave city
A timer ball in ruby? i thought that was only diamond and pearl!?
You could get timer balls by buying them from the store at the Pokemon legaue or helping the man for the newspaper in solceon town.
Rustburo. can u only get one?
Timer balls are only in Pearl and Diamond