Abstract: An electric tool system includes a fastening unit, a sensor unit, a torque calculator, an input unit, a comparison processor, and a correction processor. The fastening unit fastens a work target onto a specified member with driving force generated by a power source. The sensor unit detects a physical quantity corresponding to fastening torque with which the fastening unit fastens the work target. The torque calculator calculates a torque measured value by applying a result of detection of the physical quantity by the sensor unit to a calculating method. The input unit accepts entry of a torque true value. The comparison processor compares the torque measured value with the torque true value. The correction processor makes, based on a result of comparison made by the comparison processor, correction to the calculating method to make a difference between the torque measured value and the torque true value equal to or less than a predetermined threshold value.

Abstract: An instrument panel with meters/indicating lamps and their drive circuits implemented therein, a centralized control circuit board provided with control circuits for vehicle-mounted electric equipment including the meters/indicating lamps, and an electric junction box for distributing power sources and input/output signals for the vehicle-mounted electric equipment and for integrating ground wires, are gathered and integrally united. Electric wiring and installation of electric instruments such as an instrument panel in the dashboard portion of an automobile are facilitated.

Abstract: A digital/analog indication unit which is capable of performing both digital and analog indications of detected value such as vehicle speed or the like, respectively by displaying numerals and rotating an indication needle to a scale, wherein there is no discrepancy between the digital indication and analog indication.

Abstract: A movement for instrument is of thin construction. A rotatably supported shaft extends through a thin magnet and supports the magnet on it. The magnet radiates a magnetic field that varies in magnetic field strength in accordance with a sine function along a circular path about the shaft. A signal generator provides a first current and a second current. First straight conductors are disposed in a first direction parallel to the surface of the thin magnet, are laid in the magnetic field of the magnet, and are supplied with the first current through them. Second straight conductors are disposed in a second direction parallel to the surface of the magnet and transverse to the first direction. The second conductors are laid in the magnetic field of the magnet and are supplied with the second current through them. Thus, the magnet is angularly positioned in accordance with the magnitudes and directions of said first and second currents, thereby causing the pointer to indicate the angular position of the magnet.