Scales are used to measure weight, whether it’s in pounds or in kilograms. Most scales at doctors’ offices nowadays are electric. A patient has to stand on a typical adult scale, and the scale will measure his or her weight. Along with weight, most scales can measure BMI also—a comparison of height, weight, and age. Since babies cannot stand on scales, there are specially made scales for babies. Babies are lain down in these scales and these scales measure their weight in ounces and pounds. Remember, sixteen pounds equal one ounce.