This invention provides a stamp capable of matching a selectable print face and a fixed print face on a same plane easily. A first phase-shifted signal can be generated by the delay device, which is delayed by a first delay time with respect to the input signal, and a second phase-shifted signal can be generated, which is delayed by a second delay time with respect to the input signal. The first query can be determined to include a command to store location information for the object. A pad with adhesive faced sheets is attachable to the tool head formed by the tool extension base and extensions. The generating circuit generates a TPC bit signal for controlling transmission power from the estimated SIR value and the previous SIR value stored in the memory circuit based on the path delay quantity and a reference SIR value.