Scales designed to weigh infants that are either mechanical (e.g., beam lever system, spring type) or electronic. These scales usually include a weighing platform with a tray; according to the weighing system, they either include a moving weight along a balance beam to obtain balance (beam lever system), a moving dial to show the weight (spring system), or a display (electronic system). Infant scales usually have a weighing capacity up to 10 to 15 kg (22 to 33 lb), with an accuracy of 10 to 100 g (0.025 to 0.25 lb). Some of these scales include diaper-weighing capabilities, typically permitting diaper weight determination up to one kilogram (2.2 lb) with one gram (0.0025 lb) accuracy. These scales are mostly used for one-time or periodic general infant care in the hospital, in a pediatrici