Clues
Answers

Codex:
Ring of a saint that he never does hold
In life is seldom seen, yet shines bright gold
4 letters

Logic Key:
What number is the answer to this riddle?
A year soon to be starts and ends the same
Good vision of it's revealed in my name

Rose:
Engineering feat means sailing with ease
A waterway joining these two vast seas

Vitruvian Man:
On any screen
Always shaken, never stirred (4,7)