HomeMessagesBrain TeasersPuzzles & RiddlesPuzzles & RiddlesPuzzles & Riddles Puzzles & Riddles No Comments A sundial has the fewest moving parts of any timepiece. Which has the most? Answer: An hourglass, with thousands of grains of sand. READ MORE: Puzzles & Riddles Share You Comments & Feedback Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed.