example of a modification with respect to this will be provided as follows the special weighing hopper 105 is capable of measuring the weight of the special articles held therein because of this when the discharge of the special articles held in the special weight hopper 105 is assigned it becomes possible to combination calculate the weights of the normal hoppers 5 so that the weight of the special weighing hopper 105 is subtracted from the set weight range reduced weight range in this way when the predetermined condition is satisfied the special articles can be included and combination weighing can take place in addition although there is only one special head it is possible to include two or more heads in this case the special articles supplied by each special head may be different in addition the normal heads do not have to be limited to only one article but rather it is also possible to partition them into two or more classes by using guide plates 100 supplying separate articles to each class and conduct a so called mixed weighing that mixes and weighs these articles furthermore when a predetermined condition is included that continuously discharges special articles in other words parent child weighing it becomes possible to combination weigh special articles continuously included therein in addition by including a switching means that makes it possible to select from parent child weighing and other predetermined conditions it becomes possible to discharge articles in response to many types of discharge conditions as an example a.