Where can you find a three foot ruler?

I’m up and down and round about,
yet all the world can’t find me out.
Though thousands have employed their leisure,
they never yet could find my measure.
I’m found in almost every garden,
In a compass or a farden.
There’s neither chariot coach nor mill
may move one inch except I will.

What am I?

I go in dry and come out wet,
The longer I’m in, the stronger it will get.

What am I?

The first is a person who lives in disguise who deals in secrets and tells nothing but lies.
Then think of a letter that’s last to mend the middle of middle and end of end.
Now think of a sound which is often heard in search of every unknown word.
Put it together and answer me this, which creature would you be unwilling to kiss?

Ripped from my mother’s womb,
Beaten and burned,
I become a blood thirsty killer.
What am I?