clock.ac material Face SecondHand MinuteHand HourHand 1.0 0.2 0.0 sim/model//material/instruments/factor rotate SecondHand sim/time/utc/day-seconds 6 -1 0 0 rotate MinuteHand sim/time/utc/day-seconds 0.1 -1 0 0 rotate HourHand sim/time/utc/day-seconds 0.008333 -1 0 0