Three dimensional layout device

Claim 1

A LAYOUT DEVICE FOR USE ON A SURFACE TABLE OF THE CHARACTER DESCRIBED, COMPRISING: (A) A BASE HAVING A PLANAR SURFACE THAT IS SLIDABLY SUPPORTED ON SAID SURFACE TABLE; (B) AN ELONGATE UPRIGHT STANDARD FIXED TO AND PROJECTING FROM SAID BASE AT RIGHT ANGLES TO SAID PLANAR SURFACE; (C) A MOUNTING BRACKET CARRIED ON SAID STANDARD IN LONGITUDINALLY SHIFTABLE RELATIONSHIP THEREWITH; (D) AN ELONGATE CROSS ARM CARRIED BY SAID BRACKET IN LONGITUDINALLY SHIFTABLE RELATIONSHIP THEREWITH; (E) SCRIBING MEANS CARRIED BY SAID CROSS ARM ADJACENT ONE END THEREOF AND INCLUDING (1) A SOCKET HEAD ROTATABLE AROUND THE LONGITUDINAL AXIS OF SAID CROSS ARM RELATIVELY OF SAID CROSS ARM, (2) AN ELONGATE SHANK (A) CARRIED BY SAID SOCKET HEAD IN A SHIFTABLE RADIALLY PROJECTING CONDITION WITH RESPECT TO THE AXIS OF SAID CROSS ARM, (3) A SCRIBING INSTRUMENT (A) CARRIED BY THE PROJECTING END OF SAID SHANK (1) WHEREBY SAID SCRIBING INSTRUMENT MAY PASS THROUGH CONCENTRIC CIRCLES HAVING VARYING DIAMETERS WITH RESPECT TO THE AXIS OF SAID CROSS ARM UPON ROTATION OF SAID SOCKET HEAD, (4) FIRST INDICIA CARRIED BY SAID SHANK (A) WHEREBY THE DIAMETER OF SAID CONCENTRIC CIRCLES CAN BE PREDETERMINED, (5) SECOND AND THIRD INDICIA CARRIED BY SAID CROSS ARM AND SAID SOCKET HEAD RESPECTIVELY ON ADJACENT EDGES THEREOF (A) WHEREBY THE AMOUNT OF ARCUATE MOVEMENT OF SAID SCRIBING INSTRUMENT CAN BE MEASURED UPON ROTATION OF SAID SOCKET HEAD.