Scales are tools used to measure the mass of an object. Scales / balance sheets are categorized into mechanical systems and also electronic / digital. Scales can be grouped into several categories based on their classification. When viewed from the way it works, the types of scales include manual scales, digital scales and hybrid scales. Whereas according to its use the scales can be categorized from scales, hanging scales, floor scales, sitting scales and table scales. Each scale has its own uses such as hanging scales used to weigh food ingredients, scales are used for health and many others.