In an indicating-needle type meter device, when starting excitation of a stepping motor, a controller sets the phase of an excitation signal to a predetermined excitation start position and returns the phase of the excitation signal by a predetermined reversal angle such that an indicating-needle rotates in the backward direction, thereby positioning the indicating-needle at a stopper position. Subsequently, the controller advances the phase of the excitation signal by an origin return angle to rotate the indicating-needle in the forward direction to an origin position apart from the stopper position by a predetermined angle, thereby positioning the indicating-needle at the origin position. Here, the origin return angle is an angle obtained by adding a backlash angle, a predetermined positive pre-offset angle, and a positive placing error correction angle set based on a placing error of the indicating-needle with respect to the stopper.

A footwear indicator is discloses capable of providing an indication of the degree of wear on a footwear, for example, an athletic or other type of shoe.

A footwear indicator is discloses capable of providing an indication of the degree of wear on a footwear, for example, an athletic or other type of shoe.

A pipeline pig signal includes sealing means located within a lower end of the trigger cavity of the signal which prevents pipeline debris from entering the trigger cavity. The sealing means moves between a first sealing position and a second sealing position in response to the trigger moving between a non-triggered and triggered position. The sealing means may be a polymer boot, a filter arrangement, a sliding piston arrangement, or a sliding shelf arrangement.

A pipeline pig signal includes sealing means located within a lower end of the trigger cavity of the signal which prevents pipeline debris from entering the trigger cavity. The sealing means moves between a first sealing position and a second sealing position in response to the trigger moving between a non-triggered and triggered position. The sealing means may be a polymer boot, a filter arrangement, a sliding piston arrangement, or a sliding shelf arrangement.

A removable display and operating module for a measuring device and/or a field device for level measurement or for limit level determination is provided, the removable display and operating module including a radio module; and an electrical connection element configured to form a detachable connection with a connection counterpart for transmitting radio frequency signals from the radio module to a radio frequency housing feedthrough and/or to an antenna of the measuring device and/or the field device. There is also provided a sensor housing for a field device for level measurement or for limit level determination, the sensor housing being configured to completely accommodate the removable display and operating module. A method of manufacturing a field device for level measurement or level limit determination is also provided.

A removable display and operating module for a measuring device and/or a field device for level measurement or for limit level determination is provided, the removable display and operating module including a radio module; and an electrical connection element configured to form a detachable connection with a connection counterpart for transmitting radio frequency signals from the radio module to a radio frequency housing feedthrough and/or to an antenna of the measuring device and/or the field device. There is also provided a sensor housing for a field device for level measurement or for limit level determination, the sensor housing being configured to completely accommodate the removable display and operating module. A method of manufacturing a field device for level measurement or level limit determination is also provided.