An equipment unit includes: a first processing unit which provides a request for displaying a constituting element of a screen; and a first communication unit which accepts the request and designates information identifying the constituting element to transmit a displaying request for the constituting element to the information processing terminal. The replica delay line provides two replica delay edges to the interpolated delay edge generator. A switch is received in a switch groove in the head and pivotable about a pivoting axis. The potential of this approach is that it uses direct measurements of Doppler signals originating only from moving red blood cells. In another aspect, the surgical clip includes a housing with an inner member and an outer member having a telescoping relationship.