Bernadette: What is that?
Raj: Wow, it's an antique sextant. Sailors used these to find their position by the stars.
Amy: What a nice gift for an astrophysicist.
Raj: I know, she's so thoughtful.
Penny: See, she's trying to get you back. Now, that is exactly what I would've gotten you if I had any idea what it is or what you do.