Convenient compact scales on android. You can determine the weight of any object to 500 grams (depending on the screen). There is a small error - about + -20 grams. The more rounded and smooth shape of the object, the more accurate the scale will show the weight. That would not damage the screen, very hard on him a piece of cardboard or plastic card - it will also increase the accuracy of the scales. https://play.google.com/store/apps/details?id=serg.tano_apps.weigher_scales https://www.youtube.com/watch?v=SiW5IghcbfM
