Yes 2 tablespoons does equal 1 ounce.
For every ounce there are 2 tablespoons of ingredients.
So if you need an ounce of flour then you would need 2 tablespoons of flour to make 1 ounce of flour.
If you need 2 ounces of flour then you would need 4 tablespoons of flour.
If you need 4 ounces of flour you would need 8 tablespoons of flour and so on and so fort.
But you always have 1 tablespoon of ingredients in 1 ounce of ingredients.
To get how many tablespoons you need to equal the amount of ounces you're needing just take 2 tablespoons and multiply that number by how many ounces you need and you'll get the answer.