Mobile robot base with mast

FIG. 1 is a top, front perspective view of a mobile robot base with mast showing our new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is back perspective view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

In the drawings, the broken lines represent portions of the article which form no part of the claimed design.