how to set the pendulum on a grandfather clock
Moving it up pushes the âbobâ (the round disk) up so the clock will run faster. If you turn the nut as to lower the âbobâ, the clock will run slower. The pendulum disk is moved up or down by turning the adjustment nut. 1) Start by seeing exactly how far off the time is over a 24 hour period.Set the grandfather clock correctly by using your cell phone.oving it up pushes the âbobâ (the round disk) up so the clock will run faster. If you turn the nut as to lower the âbobâ, the clock will run slower. The pendulum disk is moved up or down by turning the adjustment nut. 1) Start by seeing exactly how far off the time is over a 24 hour period.