An endoscope apparatus comprising: a first optical system for observing an inside of an object, the first optical system being provided in an insertion portion of an endoscope to be inserted to the object; a second optical system for observing the inside of the object, the second optical system being provided in the insertion portion and providing parallax relative to the first optical system; a light-blocking shutter that is pivotable between a first position in which the light-blocking shutter blocks a first optical path of the first optical system and a second position in which the light-blocking shutter blocks a second optical path of the second optical system, a magnetic body being formed on at least a part of the light-blocking shutter or at least a part of the light-blocking shutter includes a magnetic body; a magnet rotor fixed to a pivot shaft of the light-blocking shutter; a drive coil (44, 45) that upon direct current being provided to the drive coil (44, 45), provides a magnetic force to the magnet rotor to pivot the light-blocking shutter from the first position to the second position or from the second position to the first position; a detection coil (41, 42, 140, 240) provided in a pivoting region of pivoting of the magnetic body along with pivoting of the light-blocking shutter, alternating current being provided to the detection coil (41, 42, 140, 240); an image pickup device that individually forms a first image of an observed site of the object observed via the first optical system and a second image of the observed site observed via the second optical system, the second image exhibiting parallax relative to the first image, on an entire light-receiving surface with a time difference provided by the light-blocking shutter; and a control section provided inside the endoscope or an apparatus body to which the endoscope is connected, the control section performing measurement of the observed site from the first image and the second image formed on the light-receiving surface of the image pickup device, wherein the control section performs control to provide the direct current to the drive coil (44, 45) and performs control to provide the alternating current to the detection coil (41, 42, 140, 240), and where the alternating current is provided to the detection coil (41, 42), the control section detects a pivotal position of the light-blocking shutter by detecting variation of an inductance when a magnetic field generated in a hollow portion (41c, 42c, 140c, 240c) of the detection coil (41, 42, 140, 240) is blocked by the magnetic body, from a value of the alternating current. a first optical system for observing an inside of an object, the first optical system being provided in an insertion portion of an endoscope to be inserted to the object; a second optical system for observing the inside of the object, the second optical system being provided in the insertion portion and providing parallax relative to the first optical system; a light-blocking shutter that is pivotable between a first position in which the light-blocking shutter blocks a first optical path of the first optical system and a second position in which the light-blocking shutter blocks a second optical path of the second optical system, a magnetic body being formed on at least a part of the light-blocking shutter or at least a part of the light-blocking shutter includes a magnetic body; a magnet rotor fixed to a pivot shaft of the light-blocking shutter; a drive coil (44, 45) that upon direct current being provided to the drive coil (44, 45), provides a magnetic force to the magnet rotor to pivot the light-blocking shutter from the first position to the second position or from the second position to the first position; a detection coil (41, 42, 140, 240) provided in a pivoting region of pivoting of the magnetic body along with pivoting of the light-blocking shutter, alternating current being provided to the detection coil (41, 42, 140, 240); an image pickup device that individually forms a first image of an observed site of the object observed via the first optical system and a second image of the observed site observed via the second optical system, the second image exhibiting parallax relative to the first image, on an entire light-receiving surface with a time difference provided by the light-blocking shutter; and a control section provided inside the endoscope or an apparatus body to which the endoscope is connected, the control section performing measurement of the observed site from the first image and the second image formed on the light-receiving surface of the image pickup device, wherein the control section performs control to provide the direct current to the drive coil (44, 45) and performs control to provide the alternating current to the detection coil (41, 42, 140, 240), and where the alternating current is provided to the detection coil (41, 42), the control section detects a pivotal position of the light-blocking shutter by detecting variation of an inductance when a magnetic field generated in a hollow portion (41c, 42c, 140c, 240c) of the detection coil (41, 42, 140, 240) is blocked by the magnetic body, from a value of the alternating current.