A device for tracing perspective views from plane views.

摘要

The device comprises a flat base plate, a drawing board at substantially right angles to the base plate, a guide rod having one end universally pivotally connected to a mounting in a tracing instrument carrying a tracing index located adjacent to the base plate, the mounting being adjustable in the tracing instrument in a direction perpendicular to the base plate, a shaft rotatable on a fixed axis extending parallel to the base plate, a universal joint on one end of the shaft in which the guide rod is slidably mounted, and a universal joint connecting the other end of the shaft to a rod extending parallel to the guide rod and having an end provided with a stylus for marking on the drawing board, the two rods being pivoted to the two ends of a coupling rod extending parallel to the shaft.