The ornamental design for a controller for endoscope, as shown and described.
FIG. 1 is a top, front and right side perspective view of a controller for endoscope showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a right side elevational view thereof; and,
FIG. 8 is a top, front and right side perspective view thereof in a manner of use.
The broken line portions of the controller for endoscope throughout the drawings are shown to illustrate environment only and form no part of the claimed design.