So you would like to figure out how much fat there is in your stomach area? The Tanita Abdominal Fat Detector may help with that. It can measure abdominal fat from 0.4cm to 3.0cm and higher. The display also shows you how what kind of stomach you should have depending on your fat readings.
This portable device weighs around 91g. It runs on CR2032 batteries. Could prove useful to fitness enthusiasts.