MECHANICAL TIMEPIECE WITH ATTITUDE DETECTOR

In a mechanical watch comprising an inventive position detector, a movement 100 comprises a movement barrel 120, a center wheel & pinion 124, a third wheel & pinion 126, a fourth wheel & pinion 128, a balance 140, an escape wheel & pinion 130 and a pallet fork 142. Coils 180 are mounted to the front side surface of a main plate 102 so as to face to the surface of a balance wheel 140b on the main plate side. A balance magnet 140e is mounted on the surface of the balance wheel 140b on the main plate side so as to face to the front side surface of the main plate 102. A gap between the balance magnet 140e and the coil 180 is determined such that magnetic flux of the balance magnet 140e affects the coil 180 when the coil 180 is conductive. A position detector 610 and a circuit block 606 are disposed on the front side of the main plate 102. The position detector 610 is mounted on the circuit block 606. The position detector comprises a case 610a whose shape seen from the top is circular and whose shape seen from the side is elliptic, a plurality of patterns A1 through E2 disposed on the inner surface of the case 610a and conductive fluid 608 stored within the case 610a. The operation of the balance 140 is controlled based on the detected result of the position of the mechanical watch detected by the position detector 610 in the mechanical watch comprising the inventive position detector.