Alfons Dipl Ing Spies

Position measuring instrument

Photoelectric angle measuring device

Arrangement and method for the automatic correction of error-containing scanning signals of incremental position-measuring devices

Magnetic length or angle measuring system having improved magnetic sensor arrangement

Magnetic position measuring device using Hall elements as sensors and method for its operation

Position measuring method and apparatus

Anordnung und Verfahren zur automatischen Korrektur fehlerbehafteter Abtastsignale inkrementaler Positionsmeßeinrichtungen

Arrangement for automatic correction of faulty sensing signals of incremental position measurement devices

Prodn. of marking carrier with marking pref. in scale structure of measuring unit

Position measuring device having a sensor for sensing the distance between a scanning unit and a scale