The invention in the simplest form is a technique to provide for sharing of power and signal pins on a motor controller. As mailpieces are accumulated into the stack, they push the stack against the paddle. The scheduling system can reduce the necessity of update of the cell read sequence management table and can execute data transfer which assures the rate of each ATM line. The potential product dispatch schedule is then simulated based on the process and test equipment model. The holding section assists loading of the vehicle onto the escalator through the article in the vicinity of an entrance gate of the escalator and assists unloading of the vehicle from the escalator in the vicinity of an exit gate. The method of using said sampling device according to the present invention comprises the following steps: attaching a sampling wipe to the swiping surface; fixing the front end portion of the sampling wipe by using the front holder, and fixing the rear end portion of the sampling wipe by using the rear holder.