Today most kitchens has digital scales which are simple to use and very precise. Measuring weight has not always been so easy. Some commercial scales required the operator to add weights to one side until the scales balanced, others were designed to hang an object from, like the ones shown here. My father was a grocer and I have vague memories of both sorts, including big commercial ones with a scale you slid weights along. Do you remember what sorts of scales your mother or grandmother had?