Several types of traditional analog scales (double-balance, triple-balance, and spring) are still in use today, but they are not nearly as reliable or accurate as electronic scales. They are accurate at weighing large objects within one pound, and small objects within a few ounces. However, many industries and businesses require far more accuracy. In medicine, scientific research, and manufacturing, measurements have to be precise as possible to ensure quality data and effective results. Thus, most industries and business have turned to electronic scales for improved reliability and efficiency in their measurements.