Down the plughole?

I took dozens of photos today of plugholes, shower heads, taps from different angles and other household places where limescale builds up. All as part of the evidence I need to activate the guarantee for the water conditioner that was installed today.

As you might guess, it's extremely difficult to get an in-focus picture of a basin tap nozzle from underneath. And impossible to get a picture of limescale build-up inside a washing machine, which is the main purpose of this exercise for me.

I just hope this proves to be a step forwards, not sideways.