If you want a small digital scale that you can take anywhere, check out Truweigh Note. 

This scale is slim and compact, measuring 3.3 inches in length and 0.6 inches in height. It's lightweight and great for carrying around and the cover protects it from damage. You can also use the cover as a weight tray for loose items. 

The Note mini-scale measures up to 100g with a 0.01g accuracy and weighs in multiple metric units. It comes with a single CR2032 battery and is backed with a 10-year end-user warranty.