A blue pot full of water sitting on a stove burner that is set to 9.
A pot of water on a stove with the temp level turned to 9.
A two burner portable stove with a blue stock pot on one of the burners with the digital number 9 showing on the stove.
a blue pot on a black cooker with the temp set at 9
An electric burner with level 9 heat, boiling a pot of water.