Answer:
A type of hammer that brings a room to order.
Where do you go in through one hole and come out through two holes at the same time?
What is up that’s also down? What’s a smile and a frown?
Four of us are in your field, But our differences keep us at yield, First, a one that is no fool, Though he resembles a gardener’s tool, Next, one difficult to split in two, And a girl once had one as big as her shoe, Then, to the mind, one’s a lovely bonder, And truancy makes it grow fonder, Last, a stem connecting dots of three
Runs smoother than any rhyme, loves to fall but cannot climb.
What covers its face with its hands, speaks no language, yet most known what it's saying?