The ornamental design for the controller for tattooing apparatus, as shown and described.
FIG. 1 illustrates a front-top-right side perspective view of the controller for tattooing apparatus according to the present invention.
FIG. 2 illustrates a front view of the controller according to the present invention.
FIG. 3 illustrates a rear view of the controller according to the present invention.
FIG. 4 illustrates a left side view of the controller according to the present invention.
FIG. 5 illustrates a right side view of the controller according to the present invention.
FIG. 6 illustrates a top planar view of the controller according to the present invention.
FIG. 7 illustrates a bottom planar view of the controller according to the present invention; and,
FIG. 8 illustrates a front-top-right side perspective view of the controller with the tattooing apparatus is shown in phantom.
The phantom lines showing of a tattooing apparatus is included for the purpose of illustrating environmental structure and forms no part of the claimed design.