Station 2

Hint 1

Start by identifying the 4 geometric shapes on the locomotive body. The first shape is a triangle. This means that you will be able to find the first key digit of the secret code. Find it on the dial, it is indicated by the triangle-shaped arrow.

Remember this key digit and do the same search for the other 3 geometric shapes.

Thus, you will get the 4 key digits of the secret code.