BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front view of an engine intake control device in which a rotation angle detection device according to Embodiment 1 of the present invention is incorporated;
FIG. 2 is a sectional view of FIG. 1;
FIG. 3 is a plan view of a magnetic circuit shown in FIG. 2;
FIG. 4 is a sectional view taken along the arrow line IV-IV of FIG. 3;
FIG. 5 is a diagram showing how a bottomed member and the magnetic circuit are integrated by insert molding;
FIG. 6 is a plan view of the magnetic circuit of a rotation angle detection device according to Embodiment 2 of the present invention; and
FIG. 7 is a sectional view of the magnetic circuit of FIG. 6, taken along the arrow line VII-VII.