Carbon based nano materials such as single, double and multi-walled carbon nanotubes serve as fundamental building blocks for NEMS. Though carbon based nano structures are relatively new breed of materials, but they are extremely important for mechanical and materials industries and for the fabrication of semi-conductor hybrid devices as well as future nano computers. There is a challenging lack in understanding the complex mechanism that involves and controls the mechanical properties of vertically aligned multi-walled carbon nanotubes (VAMWCNTs). For several applications in the regime of micro and nano electro-mechanical systems, it is crucial to understand the combined behavior of CNT turfs rather than analyzing only the properties of a single carbon nanotube as multi-walled convoluted and intricate turf structures yield properties different to those shown by single walled carbon nanotubes. This book is an effort to quantify and characterize the 'ruling' parameters that play the most important role in controlling the mechanical response of MWCNTs. Extremely useful stereology-assisted experimental techniques are presented to study SEM micrographs of MWCNT turf structures.