Did the mesolithic age use stone tools?

The simple answer is probably "yes".

Meso means "between".

"Lithic" means stone.

So.. let me think...

middle stone.

Well almost.

You asked "Did the Mesolithic age use stone tools?"

The Mesolithic age was time in history. It could not "use" anything.

People of the Mesolithic age could, and probably did, use stone tools.