Good recipes are consistent . And measuring by weight is, by far, a better way to be consistent than just measuring volume. For regular kitchen use, a 6-9 Lb capacity scale will suffice on most tasks. If you only consistently measure large items, like roasts, choose the 22 Lb scale. If you're measuring ingredients for dietary needs, choose the electronic or the diet scale.
Great accuracy is achieved in scales with a balance beam or weights.
Such pinpoint accuracy is not usually needed in food preparation. These scales are for domestic use, and not intended for commercial use. To Top of Page Click on small photos to see larger version.