| ||For the bobblehead in Fallout 3, see Bobblehead - Science.|
It is found inside Malden Middle School/Vault 75, on the desk overlooking the subterranean "Diner" combat test area inside the vault building on basement level 3. You need to get the Vault 75 lab access card off the Gunner commander in the diner to get to this room. Essentially, just follow the Vault 75 side quest that starts upon entering Vault 75.
- pc ps4 xboxone The extra guess does not stack with the Close to Metal perk.[verified]