Answer:
I'm a ruler with 12 agents. Half of them work in the darkness. Who am I?
My head and tail both equal are my middle slender as a bee. Whether I stand on head or heel Is quite the same to you or me. But if my head should be cut off the matter's true though passing strange directly I to nothing change.
I have a neck and no head two arms but no hands. I go with you to school I go with you to work.
I have no life but I can die. What am I?
I am commonly abbreviated to H
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk