Step 1) First thing to do is get a measurement of the object used. In this case it is 2.585" By entering it in the box for Diameter it automatically calculates the perimeter for you. This measurement is what tells you the distance all the way around the object. Once you have this information you can then create a rectangle the exact height. Then an image can be added equally within this rectangle. 

Step 2) Now we can add multiple images with the grid array, by selecting 1 row and the amount needed the spacing can be adjusted to match all the way within the rectangle. Once this is set highlighting all the objects the subtract at overlap is selected and the engraving settings are adjusted.