Axonometric computer slide rule

Claim 1

A COMPUTER FOR AXONOMETRIC DRAWINGS COMPRISING A BODY, A LONGITUDINAL SLIDER MOUNTED AND LONGITUDINALLY SLIDABLE WITH RESPECT TO SAID BODY, AN INCLINE PLANE SCALE ON EACH SIDE OF SAID SLIDER ADJACENT ONE LONGITUDINAL EDGE THEREOF, A FIRST COSINE SCALE ON EACH SIDE OF SAID SLIDER ADJACENT SAID INCLINE PLANE SCALES, AT LEAST ONE FAMILY OF CURVES ON EACH SIDE OF SAID SLIDER ADJACENT SAID FIRST COSINE SCALES; AN INDEX ON EACH SIDE OF SAID BODY ADJACENT SAID INCLINE PLANE SCALES OF SAID SLIDER, A DIAGONAL LINE ON EACH SIDE OF SAID BODY EXTENDING ACROSS SAID ONE SLIDER AND INTERSECTING WITH A LINE WHICH EXTENDS VERTICALLY FROM SAID INDEXES; A FIRST PROTRACTOR SCALE ALIGNED ON EACH SIDE OF SAID BODY WITH SAID INDEXES, ONE OF SAID FIRST PROTRACTOR SCALES BEING ADJACENT ONE OF SAID INCLINE PLANE SCALES OF SAID SLIDER, A SECOND COSINE SCALE ON EACH SIDE OF SAID BODY ADJACENT SAID FIRST PROTRACTOR SCALES AND ALIGNED WITH SAID INDEXES, A SECOND PROTRACTOR SCALE ON ONE SIDE OF SAID BODY ADJACENT ONE OF SAID SECOND COSINE SCALES AND ALIGNED WITH ONE OF SAID INDEXES, A THIRD COSINE SCALE ON ONE SIDE OF SAID BODY ADJACENT SAID SECOND PROTRACTOR SCALE AND ALIGNED WITH SAID ONE OF SAID INDEXES; AND SLIDER MEANS INCLUDING A HAIRLINE ON EACH SIDE OF SAID BODY AND LONGITUDINALLY SLIDABLE OVER SAID BODY AND SAID SLIDER, WHEREBY EACH CURVE OF EACH OF SAID FAMILY OF CURVES REPRESENTS AN ELLIPTICAL DEGREE AT THE INTERSECTION THEREOF WITH THE ASSOCIATED DIAGONAL LINE ON SAID BODY AND WITH THE ASSOCIATED HAIRLINE FOR AN ELLIPSE OF A DESIRED DEGREE ON THE ASSOCIATED INCLINE PLANE SCALE OF SADI SLIDER WHEN SUCH DEGREE IS ADJACENT THE ASSOCIATED INDEX ON SAID BODY, AND WHEREBY MOVEMENT OF SAID SLIDER WITH RESPECT TO SAID BODY ALIGNS A POINT ON ONE OF SAID FIRST COSINE SCALES WITH RESPECT TO A POINT ON ONE OF SAID SECOND COSINE SCALES OR WITH RESPECT TO A POINT ON SAID THIRD COSINE SCALE FOR FINDING THE PROPORTIONAL UNITY LENGTH OF ALL LINES BY MOVEMENT OF SAID ASSOCIATED HAIRLINE TO A DESIRED POINT ON SAID BODY, AND WHEREBY MOVEMENT OF ONE OF SAID HAIRLINES WITH RESPECT TO SAID BODY ALIGNS CERTAIN OF SAID COSINE SCALES WITH CERTAIN OF SAID PROTRACTOR SCALES FOR DETERMINING BASE ANGLES.