driving which is provided with the upper component elements u 1 a to u 1 d thereon a control signal for this motor driving can also be transmitted from the data processing unit of fig1 specifically a measuring unit can be moved in line with measurement requirements for each body region for example the length of the arms or the like and fixed in an optimum position by the stopper the other body region measuring units u 2 to u 6 each basically have a configuration common to the body region measuring unit u 1 and thus their description is omitted under regular usage conditions the five body region measuring units u 2 to u 6 for the head both arms and both legs around the trunk are united and used with the central body region measuring unit u 1 if necessary however they can be separated from each other and used independently the system 1 allows the data processing unit 10 to instantly input each sensor output signal weight information from the body region measuring units u 1 to u 6 supporting each body region of the subject execute a data processing and output a measurement result as described earlier a load can be measured by changing the height of the flat support.