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1. A MOVEMENT TRANSLATING DEVICE COMPRISING IN COMBINATION:

MAGNETIC MEANS FOR SETTING UP A MAGNETIC FIELD THAT VARIES WITH DISTANCE, SAID MAGNETIC MEANS INCLUDING ANGULARLY DIVERGENT POLES DEFINING A WEDGE-SHAPED AIR GAP, SAID POLES RESPECTIVELY HAVING CONFRONTING UNLIKE MAGNETIC POLARITIES, A MOVABLE ELEMENT, A PROBE COUPLED TO SAID MOVABLE ELEMENT AND POSITIONED IN SAID AIR GAP, A HALL ELEMENT MOUNTED ON SAID PROBE AND MOVABLE EQUIDISTANTLY BETWEEN SAID POLES TOWARD AND AWAY FROM THE ENDS THEREOF IN RESPONSE TO MOVEMENT OF SAID MOVABLE ELEMENT, MEANS FOR PASSING CURRENT THROUGH SAID ELEMENT IN A DIRECTION THAT IS SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF SAID MAGNETIC FIELD, AND MEANS FOR MEASURING THE HALL VOLTAGE DEVELOPED ACROSS SAID ELEMENT.

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1. A MOVEMENT TRANSLATING DEVICE COMPRISING IN COMBINATION:
- MAGNETIC MEANS FOR SETTING UP A MAGNETIC FIELD THAT VARIES WITH DISTANCE, SAID MAGNETIC MEANS INCLUDING ANGULARLY DIVERGENT POLES DEFINING A WEDGE-SHAPED AIR GAP, SAID POLES RESPECTIVELY HAVING CONFRONTING UNLIKE MAGNETIC POLARITIES, A MOVABLE ELEMENT, A PROBE COUPLED TO SAID MOVABLE ELEMENT AND POSITIONED IN SAID AIR GAP, A HALL ELEMENT MOUNTED ON SAID PROBE AND MOVABLE EQUIDISTANTLY BETWEEN SAID POLES TOWARD AND AWAY FROM THE ENDS THEREOF IN RESPONSE TO MOVEMENT OF SAID MOVABLE ELEMENT, MEANS FOR PASSING CURRENT THROUGH SAID ELEMENT IN A DIRECTION THAT IS SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF SAID MAGNETIC FIELD, AND MEANS FOR MEASURING THE HALL VOLTAGE DEVELOPED ACROSS SAID ELEMENT.

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