You can get Devon Goods in some of the Poke Marts:
- Rustboro City
- Petalburg City
- Slateport City
- Fortee City
- Lilycove City
- Sootopolis City
- Mossdeep City
- Dewford Town
- Fallarbor Town
- Lavridge Town
You can get the Devon Scope from Steven.
Once you have it you can identify invisible Pokemon AKA Kecleon, ever bumped into something in the middle of a route even though you can't see what you bumped into? Press A and you will find it's a Kecleon blocking your way either capture it or defeat it and it will go away.
You cannot find the Devon Scope in Pokémon Yellow, Pokémon Yellow is a Generation 1 game and the Devon Scope was created in Generation 3 and jus for games such as Pokémon Ruby, Pokémon Sapphire and Pokémon Emerald that were based in the Hoenn region.
Steven gives you it on the route east of fortree city.
All you need is the Devon scope which you need to go to the route east of fortree city and find Steven he will give the scope to you.
The Fortree Gym, is blocked by a mysterious entity. Simply move on east, then south to the bridge. There you will find steven. After battling the Kekleon, he gives you the Devon scope. Go back to the gym, and use the Devon scope on the kekleon. either it runs away, or you have to battle it.
That 'invisible thing' is a Kecleon. You need to obtain a Devon (Hoenn equivalent of Silph) Scope, from Stephen. Go out past Fortree City and go to the bridge. I'm fairly sure you will find Stephen there.
same as red and yellow...find out your self
maybe, but i find it very unlikely.
You get the flute in the Pokemon tower after you get the silph scope.
You have to find Steven and he'll give you Devon Scope and you use that on the invisible object.
you have to find steven get a Devon scope and use it on the invisible keckleon in front of the gym
You can capture one in the wild west of Lilycove City. It is rare. Or, if you have a Devon Scope, you might get blocked by something invisible. Use the Devon Scope, and it should be a Kecleon. There are a few around Fortree City.
In Pokemon Yellow you have to find the silph scope, and then go the the tower and it is the unidentified ghost!
All you need is the Devon scope which you need to go to the route east of fortree city and find Steven he will give the scope to you.
A Devon scope.
Kecleon can be found in Routes 118, 119, 120, 121 & 123, as well as by the Devon Scope on 120 (going down to the water and on the bridge - Steven will guide you to the latter). You startle one in Fortree (on the way to the gym), but it leaves.
you go to fortree and then go out the other side onto a route fight through the grass and trainers and find a bridge you will see steven and he will give you the Devon scope and then you will fight a kecleon then go back to fortree when you get to the "invisible thing" say yes to use the Devon scope and a kecleon will run
in the cave where aaron are found
After getting Silph Scope you go to Lavender Town and go to the Pokémon Tower. Then you go to the last floor, and thanks to the silph scope you are able to know the identidy of the guardian Pokemon, it´s a cubone if i´m not mistaken. After you defeat the guardian Pokemon you will find team rocket and then you save Mr. Fuji.
You can find Devon in Mossdeep City he will give a Beldum. Note: Also works for Ruby and Sapphire.