Mechanical clocks are inherently inaccurate and therefore cannot be compared to electronic clocks.
How to adjust wall clock speed.
On clocks with a pendulum move the pendulum disk up to speed up the clock or down to slow it.
The bob will rise making the effective length of the pendulum shorter and the clock faster.
Each antique clock was made by hand without using electric tools and without the aid of computerized machines.
To speed up the clock tighten the nut turn it toward your right.
On clocks without a pendulum just move the time adjustment lever.
It is usually.
To accurately adjust the clock make the adjustments once a week when the clock is wound.
Turn it to the right to move the disk up and to the left to lower it.
However you might stop hearing this sound when the momentum of the pendulum changes or slows.
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.
Use the adjustment nut.
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.
How to adjust an antique clock.
It is relatively easy to adjust the pendulum on a clock if follow some simple instructions.