How to measure spaghetti?

I'm usually cooking for my family of six, so I had to figure out how to measure it once it was cooked.

This is how I had to figure it out for each type of pasta used:

1. Weight it as 2oz dry on a scale.
2. Cook it until it was done how I like it.
3. Then "wet measure" in a measuring cup.

Most of the types of pasta I cook for the family turned out to be roughly a cup, but that may vary with pasta shapes. I have my pasta with more veggie mixed in than I give the kids.

So, I was wondering, the serving size of spaghetti is 2oz but what would that happen to be in a dry measuring cup? I was wondering because I don't really know what 2oz of spaghetti looks like and having it in cups would help me understand about how many oz I had.
Thanks in advance!

2 oz= 1/2 cup dry weight

I use my food scale and weigh it, but it does come to 1 cup cooked (like everyone else says).