This suite of objects should not be used anymore to test out your printer. I curated this suite back in 2012 as a method to test print quality on several different Mendel Max printers that were new to the 3D Printing world, but since then printers have evolved (when I uploaded this, it was normal to print at .3 or .4 layer height.), their tolerances were not that great, and as such, there are much better printer benchmarking files out there now.
This is the suite of objects used in my 3D Printer testing regime. I have selected these items as I feel they cover the full range of necessary test to properly and accurately judge the quality of a filament-based 3D Printer.