Is there a special type of scale or instrument that I can use to measure and tell me how many calories, carbs etc, I am consuming when I put a meal together. I have been kind of winging it, by using non or low fat stuff like milk cheese. I only eat egg whites, and chicken that is skinless. I do all my cooking, no salt, no oil or if I do, use olive or pam. I would really like to start keeping accurate track of my intake.