The next step is to shift slider 1 and 3 to the left Now that you have brought all the sliders in the locked position — your vertical slider is moving freely.

As initially the slider is not moving, the only thing you can do is moving slider 4 to the left

In the initial position, all the horizontal sliders but for the second row, are in the opened position Your main target is to open all the locks. The movement of the horizontal sliders is determined by the position of the vertical slider. So your primary goal is to release the vertical slider (so that it

Put this key into the slot in the box as shown, so that the slot on the key hooks a ward inside of the box. Then pull the key and while holding it pulled, release another key

The shape of this symbol corresponds with the shape of a slot on one of the sides of Nautilus. 

On the released key (with the tortoise on it) you will find a symbol and two arrows.

Press the button with the tortoise and holding the button pressed release the key with the tortoise symbol 

Find the tortoises on the box, there is more than one

Insert the figure key as shown to release the ray fish You can now also release another key:

The contours of the figure key can be found somewhere else on the box

As soon as you adjust the wheels to the 245 position — you will be able to extract the wide figure key.

Solution for the wheels Set the middle wheel on 3 Set the left wheel on 3 Rotate the middle wheel clockwise (left wheel should rotate together in opposite direction) Set the middle wheel on 6. In this position the left wheel should be on 7. The right wheel should rotate freely Set the right wheel