How to Use "touchstone" with Example Sentences

1. That pay has become a touchstone is no surprise .
2. But the metal is something of a touchstone on the supply side , too .
3. In fact , bara is a national political touchstone as much as a soccer team .
4. The concentration on one idea , which audrey represented , was a touchstone for me .
5. Egypt is the most important arab country and the touchstone for change in the arab world .