To read the time, the hour is the circled number on the giant cog. The minutes are determined by adding up the numbers next to the top marbles of each column (an empty column is zero). Example: 3 is the selected number on the cog, the top marble on the first column is 40, the second column 15, and the third 1. The time would be 3:56. I also made a new contest! Please go check it out! http://scratch.mit.edu/projects/23792924/ I would say this is the most fun clock to watch. It's a lot more entertaining than two/three hands going around in a circle. :) (No offense to the people who made those clocks)
Tell the time with this marble clock! :)