The Medway Handyman wrote:

What I can't work out is the 1-7 scales. In each case the 1 egg mark is
higher up than the 7 egg scale, so it indicates that 1 egg requires more
water to cook than 7 eggs would?

Do the eggs actually sit *in* the water rather than above it? If so, it
seems clear to me that having only one egg in the pan is going to need
more water to cover it than if there were six others taking up space in
the same-sized pan.

Pete