What measurement tool to use for footings?

cleners

I work for a concrete construction company. I am new to Bluebeam and am wondering what tool would I use to measure foundation footings around the perimeter of a building that the walls sit on. Or even how to measure the basement walls for a home to figure out how much concrete is needed for that foundation. Say, for example, you have someone that wants 8" wide walls that are 10' deep for their basement. What took would I use to measure that area to get the concrete total?