Answer:
What invention lets you look right through a wall?
My first half means container. Not a lot of people understand my language.
I go up when the rain comes down. What am I?
Some try to hide some try to cheat. But time will show we always will meet. Try as you might to guess my name. I promise you'll know when you I do claim.
I contain six letters minus one and you got twelve.
No matter how little or how much you use me, you change me every month.