The ornamental design for a device to follow lines on a drawing and to register the ordinates of given points of said drawing, as shown and described.
FIG. 1 is a top perspective view of a device to follow lines on a drawing
and to register the ordinates of given points of said drawing, showing my
new design, the side of the device opposite the flat surface shown in FIG.
1 being flat and plain and of the same size as the flat surface shown in
FIG. 1;
FIG. 2 is a top perspective view thereof from a different angle than the
angle of FIG. 1; and