Holy cow I bet there are a thousand little gears in that thing.
I wonder what the really tiny face just below center is for. Can't quite make out the details.
main dial indicates day of the month
top sub-dial is standard clock
left subdial is Day of Week
right subdial is phase of moon
bottom subdial is complicated
- inner ring indicates month
-outer ring indicates week of the year (out of 52)
-middle ring indicates "Day of the Month at the End of Every Seven Days"
tiny sub-subdial between Dec and Jan is the "sweep second hand"
yhs
prof marvel