FinoPour Over Coffee Kettle, 18/8 Stainless Steel, 6-Cup, 1.2L Capacity

How will you know that the water is boiling? How long do you wait before pouring over coffee?

Has anyone experienced any rust issues with this kettle? I noticed this problem from reviews of similar kettles of different brands.

Can you get your hand in the top to wash out the kettle?

being stainless steel, does this kettle really work on an induction stovetop?