This is based on the excellent, original, Noise & Vibration Dampener. I redesigned this in Sketchup to achieve:
1] More dampening (unconfirmed).
2] More support.
3] Less likelihood that it will deform over time under the weight of the machine.
Having dual micro-feet will naturally force the foot-holder (top) part closed, applying pressure to the foot of the machine and thereby keeping the dampener itself from deforming.