Tea kettle lid is fixed at one position, instead if it is designed to slide down to 25% and can be fixed over there, so that when the user boil tea or water in it, then the lid shall move up till top edge of the kettle and locked over there. This will help the users to know that the water / milk / tea is boiled and he / she needs to stop the heating / boiling that kettle. This helps to reduce or stop pouring out the liquid from that kettle.
