- You'll be needing this. You know how to work it?
- Yes, thank you.

3 seconds sound clip from Superman (1948) - Between Two Fire (Chapter 10).

You can hear this line at 00:13:35.332 in the Blu-ray version of the episode.

Quote context

[...]

- One of you goes into the car with this and a walkie-talkie. The other stays here to check the course and give directions.

- You chart two lines that intersect. When they meet, that's the spot you want.

- I'll go in the car, you stay here.

- Oh, but it'll be dangerous. You don't know what you might run into.

- If I get in a jam, I'll call for help. That's what you'd do.

- You'll be needing this. You know how to work it?

- Yes, thank you.

- Now, which way do I go from here?

- Oh, you head south for the start, and we give you directions.

- Now, you won't walk into any trouble, will you?

- That's just what I'm looking for. And you're gonna bring me right to its door.

- Come on, I'll show you what you've got to do.

- Lois, does that instrument you carry register anything yet? It should give off a buzzing sound.

- No.

- Then head east at the next cross street. It'll get louder as you approach the source of disturbance.

- Okay.

[...]