Answer:
I come out of the earth, I am sold in the market. The one who buys me cuts my tail, takes off my suit of silk, and weeps beside me when I am dead. What am I?
When you stop and look you can always see me. If you try to touch you cannot feel me. I cannot move but as you near me I will move away from you.
I am a king who's good at measuring stuff.
I am a king who’s good at measuring stuff. What am I?
You are my brother, but I am not your brother. Who am I?
I am rarely touched but often held. If you are smart you'll use me well. What am I?