The process - part 1

So this is the pic which gave me the idea of water level ruler (i dunno the name of this thing >.<)

By using Pen tools i draw back the ruler by following the reference pic..but i didnt draw it 100% exactly the same..i manipulate the shape a bit. i use gradient for it's fill and brush style stroke.

Then i add the ruler scale using the pen tools. after completing the 5th line, i copy and paste it for a few times to fill off the whole ruler with the scale
.

Then i draw the sea by using the pen tool and fill it with gradient.

Then for the water ripple, i made a circle by using ellipse tool and fill it with gradient with the setting as shown above.

Move and place it under the ruler and flatten it like a shape of an oval.

With the pen tool selected, i made a few outline for the ripple.