Devon Scope is an item in the “Gameplay” category (Key Items).
In-game descriptions
| Ruby / Sapphire · Emerald | A device by DEVON that signals any unseeable POKéMON. |
|---|---|
| FireRed / LeafGreen | A scope that signals the presence of any unseeable POKéMON. It is made by the DEVON CORP. |
| Sun / Moon · Ultra Sun / Ultra Moon · Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield | A special device made by Devon Corporation that signals the presence of any unseen Pokémon. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h