Hell's Clock - Part 1 of my tutorial that show beginner how to modeling wall clock built by Issac Youngs built about 24 of these wall clocks. VLSI - Building a chip is like building a city!! Issac Youngs during the time on an analog clock - part 3. We can probably cover much of Questions 1 and 2 in this. Robey The origin of the English lantern clock.