Complex sentence: Static balancing machines differ from hard and soft bearing machines in that the part is not rotated to take a measurement, and rather than resting on its bearings, the part rests vertically on its geometric center.
Split into simpler sentences: Static balancing machines differ from hard-and soft-bearing machines in that the part is not rotated to take a measurement. Rather than resting on its bearings, the part rests vertically on its geometric center.