"Next, the structure of the composite sensor will be described in detail with reference to FIGS. 13A, B and C. FIG. 13A is a plan view of the composite sensor; FIG. 13B a cross-sectional view taken along the line A--A in the plan view; and FIG. 13C an example of wire connection when the static pressure sensor and the differential pressure sensor are connected to each other." . . . .