The large gearwheels are no longer blocked. You can see the digits In one of the small window besides the gearwheels(in the other side opposing letters). To assign the digits to the letters, you have to know the cryptography.

It is located on the movable object inside the eye.

Now follows the explanation of how to decode the first 4 symbols using the secret code. First you can see the symbols: △5=7. It is best to write them down.

On the gear wheel with the numbers you put the number △. This corresponds to the letter S, which you can see in the window on the opposite side. The digit 5 gives the letter T. At the end you should get the word “STAR”. This is the clue for the final step.