Answer:
What do you call a three humped camel?
I am a king who's good at measuring stuff.
I am the ultimate killing machine used not once but TWICE I can be made by humans.
The more you look at me The less you see.
There is one in a minute two in a moment and none in a thousand years. What is it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.