Here is a Bluetooth enabled digital scale that lets you weigh up to 4 items at once. The Smart Diet Scale calculates the nutritional value of your entire meal, so you can stay on the right track with your diet plan. It is compatible with iOS and Android devices. The companion app has nutritional data for over 550k food items.
The scale has an easy-to-clean tempered glass top. You can use portion control plates or any other plate you have.