Timetables

The Timetables will (not) be created by future Dave with the use of the Alchemiter and are now in the hands of past Dave. They resemble a pair of records floating on rotating gears. By scratching the records, he is able to control the flow of time in a variety of ways. He seems to be able to use standard time travel to go forward and backwards in time, and uses this ability in battle. He mentions to Rose that he's spent four months skipping back and forth.