Abstract: A detection unit detects light passing through apertures provided in a seconds wheel, a center wheel and an hour wheel, respectively, which rotate on the same axis. The apertures in the seconds wheel include a circular aperture provided at a reference position therein, and two apertures provided separated by corresponding arcuate apertures of different lengths from the aperture on its opposite sides, respectively. By counting the number of light non-detection events the detection unit encounters due to the light blocking area covering the detection unit, the rotational position of the seconds wheel is detected accurately and securely.

Abstract: A chronograph with a chronograph driving mechanism through which a chronograph hand staff of a chronograph hand can be driven in rotation, with a rattrapante hand staff, arranged coaxially to the chronograph hand staff, of a first rattrapante hand that can be driven in superimposed position with the chronograph hand. The chronograph hand staff and rattrapante hand staff are connected to one another in locked-rotation, wherein the rotation of the rattrapante hand staff can be blocked in order to display a split time. A second rattrapante hand is connected frictionally with a second rattrapante hand staff arranged coaxially to the chronograph hand staff. The chronograph hand and the second rattrapante hand can be driven in movement synchronously in superimposed position, wherein the rotation of both rattrapante hand staffs can be blocked independently from one another in order to display two different lap times.

Abstract: A balanced hands clock. The clock utilizes a single movement, which movement may be located in the minute hand. A gear drive mechanism provides leverage from said movement via a first pivot shaft to drive the hour hand. The clock is mounted in a base for time indicating movement. Covers may be provided to hide the single movement and the gear mechanism, so that no visible drive configuration is visible to an observer.

Abstract: A method of setting/calibrating at least two display hands in an electronic device, wherein the method comprises the steps of initiating an actuation sequence of the setting/calibration mechanism; causing the first of the at least two display hands to rotate at least in one of a clockwise and counterclockwise direction and in a manner that is independent of the actuation sequence; initiating a hand selection sequence via a selection mode to select the second of the at least two display hands to be set/calibrated; and while preventing the first of the at least two display hands from rotating, causing the second of the at least two display hands to rotate in at least one of a clockwise and counterclockwise direction and in a manner independent of the hand selection sequence; wherein the second of the at least two display hands would be next for setting/calibrating.

Abstract: A driving mechanism is arranged in a hand for relatively rotating the hand in relation to a shaft which supports the hand, and clocking is thereby performed.