The footprint size of the base is essentially the size of an iPad to give you a guide and reaches to 260mm/10.25" in height. When the iPad lays flat the height is 135mm/5.3".
The tethering cable solution has a very versatile anchoring solution. Depending on whether you want this to be a permanent or temporary solution determines how the tether is secured. The optional anchor plate comes with a permanent and semi-permanent installation option.