Changing the speed of time keeping is accomplished by moving the pendulum disk up or down by turning the adjustment nut. To slow the clock down, move the pendulum disk down by turning the adjustment nut to the left. To speed the clock up, move the pendulum disk up by turning the adjustment nut to the right. (See figure).
Day One
1. Select a time of day that will allow you to check your clock at the same time for at least six days.
2. Record time selected . ____________________________
3. Check correct time.
4. Re-set the minute hand to the exact, correct time.
Day Two, Three, Four, Five, Six (If Necessary)
1. Check correct time.
2. Compare time shown on your clock with correct time. Is your clock fast or slow?
3. Turn the adjustment nut on the pendulum to speed up or slow down your clock.
(Rule of thumb for grandfather clocks is one revolution for each minute of change in a 24 hour period.)
4. Check correct time.
5. Re-set the minute hand to exact, correct time.
