the number on the box is the difference the two pressures must be.
hope i helped:)
You use the steam battery in Gear Alley. On number 5.
use it with the steam engine and steam battery to get into living quarters.
in the garbage
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I'm not super sure what you use it for but I think it connects to the steam battery. I think.
on the trash can
click use by the sullys place. I havent figured out the combination let. Someone let me know of they have.
get the battery thing and the key and hit the use button on the battery in your items(p.s the battery is in the garbage right next to the alarm clock building when you first enter the island)
When you want to use the steam battery to open sully's door, you have to hit use outside of his door. There is a blue faded line on the number 5 on the steam pressure meter and that is the number you have to get to. So whatever number it goes to on the meter when you click the wheel to turn it, you have to add or subtract numbers to get to five. Hope this helps! :p
you have to get -5 on the steam battery
First, collect a key scattered around the island, such as Sully's Key. Click the lock next to the door. It will unlock the door.
you use the steam battery