Hi Michael,
I highlighted the item so you could see the size better 15mmx20mmx2.6mm, it is a model for a top to a ladies ring and the mm size is not much bigger than any other design I have done. I did lower my grid size form 150 10 50 grid, not sure if that will make any difference. The object count was 210 pieces. This model would be fine till I rotated it and the pieces would dissappear and if I closed out the program and reloaded they were still missing. The high numbers only appear in that Bottom/Top box, and are in 2 to 3 digits in the other 3 boxes, hopefully this will answer any question about sizes.
Thanks
Tom