From laboratories to supermarkets, from the kitchen of our home to the warehouses, the precision balances are elements used daily in the life of human being. Although it resolves a thousand of problems since ancient times, the precision balances usually have different applications that doesn't limit only to the domestics; the weighing of substances before or after a reaction or mix, the type of mix of industrial substances, paint, to the weighing of small parts, are some of functions the the precision balance take part. Unfortunately, there is something that the customers of the precision balance usually do wrong at time to buy one of them, is not know what type of precision balance they need, because not all adjust to their needs of weighing.