Here are some examples:

* Earth's crust: The Earth's crust is on average about 30 kilometers (19 miles) thick.

* Pizza crust: Pizza crust thickness can vary widely, from very thin (around 1/4 inch) to thick and deep dish (around 1 inch).

* Pie crust: Pie crust is typically about 1/8 inch thick.

* Bread crust: Bread crust thickness can also vary depending on the type of bread, but is generally around 1/4 inch.

Please provide more information so I can give you a more accurate answer.