In the context of a kitchen scale, "1g graduation" refers to the precision or resolution of the scale's measurements. It means that the scale can display weight measurements with increments of 1 gram. In other words, the scale can measure weights as accurately as 1 gram at a time.
For example, if you place an item on the scale and it shows a weight of 250 grams, the scale can detect any changes down to 249 grams or up to 251 grams due to its 1g graduation. This level of precision is useful for measuring smaller quantities of ingredients in cooking and baking, where accuracy is important to achieve the desired results in recipes.