Answer:
I am a king who's good at measuring stuff.
A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of a green grass. What am I?
I may be made of metal bone or wood and have many teeth. My bite hurts no one and the ladies love me.
You write on me and secrets I can keep. In places never seen. I spin like a top. Though stiff as a board I'm often described like a mop.
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.