I like this system, but after a while I thought that each hand should get its own space. So for this I made the three part clock. Each hand has its own dial and reading the clock is just a matter of moving from left to right.
Step 1: Get Clock Parts
Also needed, and not pictured, is a piece in which to put all the clocks. We had a scrap piece of wood 28"x10.5" so I just grabbed that. It's warped so this is just a prototype, but for a final version just get a better material and check the thickness so that the clock movements can stick through it.
Step 2: Mark Your Centers
To prep for this, just find the right height and use your calculations from the last step to see how far left and right you need to mark the board.
Step 3: Drill!
Step 4: Glue in the Movements
Step 5: Add the Hands
Below you can see the clock at 12:00, 3:30, and 10:08.
Step 6: Decorate the Clock
Now add some varnish if you want or just put it up somewhere and wait for people to come by and try to see what it means.