Variable course approach computer

Claim 1

AN APPAROACH COMPUTER FOR USE BY PILOTS IN MAKING A CARRIER LANDING COMPRISING: A BACK PLATE, A TRANSPARENT FRONT PLATE ATTACHED TO SAID BACK PLATE AT THE TOP AND BOTTOM EDGES THEREOF AND AT TWO INTERMEDIATE POSITIONS THEREBY FORMING A CENTER POCKET AND FIST AND SECOND END POCKETS FOR REMOVABLY HOLDING DATA CARDS, FIRST AND SECOND DATA CARDS SLIDABLY MOUNTED ONE EACH IN EACH SAID END POCKET, A FIRST CIRCULAR DISK ROTATABLY MOUNTED IN SAID CENTER POCKET, SAID DISK HAVING A FIRST SCALE ADJACENT THE OUTER EDGE THEREOF OF EQUAL DIVISIONS REPRESENTING COMPASS HEADING MARKS FROM 0 TO 360 DEGREES, FIRST AND SECOND INDEX MARKS OF SAID TRANSPARENT FRONT PLATE ADAPTABLE TO BE ALIGNED WITH SAID COMPASS HEADING MARKS, SAID FIRST INDEX MARK INDICATING DIRECTION OF TRAVEL OF A CARRIER AND SAID SECOND INDEX MARK INDICATING RUNWAY HEADING OF THE CANTED RUNWAY ON SAID CARRIER, A THIRD INDEX MARK ADAPTABLE TO BE ALIGNED WITH SAID COMPASS HEADING MARKS FOR INDCIATIGN AN ASSIGNED HOLDING POSITION PRIOR TO MAKING LANDING, AND A SECOND SCALE INDICATING THE APPROXIMATE DISTANCE OF TRAVEL FROM SAID HOLDING POSITION TO SAID CANTED RUNWAY BY FIRST TRAVELING IN A CROSS-LEG DIRECTIONS FROM