Most pendulum clocks contain adjustment or rate nuts that allow you to alter the length of the pendulum to either increase or decrease the amount of swing.
How to adjust wall clock speed.
Turn it to the right to move the disk up and to the left to lower it.
If you do this and keep a record of how much it is turned each week you should be able to adjust the clock s accuracy to within a minute or two a week.
People have to keep in mind that antique clocks are often hundreds of years old.
Mechanical clocks are inherently inaccurate and therefore cannot be compared to electronic clocks.
It is usually.
Pendulum clocks with a time adjustment arbor french and american mantel clocks the time adjustment arbor is a square shaft that is much smaller than the winding arbors.
How to adjust an antique clock.
The bob will rise making the effective length of the pendulum shorter and the clock faster.
However you might stop hearing this sound when the momentum of the pendulum changes or slows.
It is relatively easy to adjust the pendulum on a clock if follow some simple instructions.
To accurately adjust the clock make the adjustments once a week when the clock is wound.
Use the adjustment nut.
Use the following rules to adjust the pendulum nut.
On clocks without a pendulum just move the time adjustment lever.