Guitar Adjustments and Thoughts On Guitar Scale Length

An informative video on string vibration and height and also scale length and neck releif. Video one discusses the string and it's vibration qualities. Then video two talks about the relationship between the adjustment of the truss rod/neck relief and the proper height of the bridge,and how the two work together.
Also,this luthier feels that the scale length(length of string from bridge to nut) has the biggest affect on the actual sound of the guitar!

http://blog.melbay.com/category/reference/