Data curve amplitude recorder

Claim 1

IN COMBINATION: LINEARLY MOVABLE CONDUCTIVE MEANS HAVING AMPLITUDE VARIATIONS REPRESENTING INFORMATION EXPRESSIBLE IN TERMS OF TIME ALONG THE X-AXIS AND IN TERMS OF VOLTAGE ALONG THE Y-AXIS OF AN ORTHOGONAL COORDINATE SYSTEM; A SUBSTANTIALLY LINEAL CONDUCTIVE ELEMENT DISPOSED TRANSVERSELY TO THE LINEAR PATH OF SAID CONDUCTIVE MEANS AND IN ELECTRICAL ENGAGEMENT THEREWITH AT A FIRST POINT; SUPPLY MEANS CONNECTED TO IMPRESS A VOLTAGE ACROSS SAID CONDUCTIVE ELEMENT; A SECOND POINT OF REFERENCE POTENTIAL ELECTRICALLY CONNECTED TO SAID CONDUCTIVE MEANS AND IN PHYSICAL CONTACT WITH SAID CONDUCTIVE ELEMENT TO ENABLE A VOLTAGE TO APPEAR BETWEEN SAID FIRST AND SECOND POINTS CORRELATIVE TO THE AMPLITUDE OF SAID CONDUCTIVE MEANS; AND INDICIA PRODUCING MEANS CONNECTED TO RECEIVE THE VOLTAGE APPEARING ACROSS SAID CONDUCTIVE ELEMENT BETWEEN SAID CONDUCTIVE MEANS AND SAID POINT OF REFERENCE POTENTIAL AT ANY INSTANT FOR PRODUCING AN OUTPUT INDICIA REPRESENTATIVE THEREOF.