Choose the proper size wood screw typically a 8 10 or 12 to fit the hanger at the top back of the clock and long enough to go securely through the wall into a stud.
How to adjust antique wall clock.
This depends how handy you are and on whether or not loosening the hands on your clock is difficult.
Video tutorial showing how to adjust the beat of an antique grandfahter clock.
On clocks without a pendulum just move the time adjustment lever.
Turning the front of the nut to the right speeds up the clock and turning it to the left slows it down in other words move the nut up to speed up or down to slow down.
Turn the nut only a small amount each time.
Open the side or back panel to the grandfather clock to reveal the chime mechanism and check the hammer adjustment only if you are sure the chime tone sounds incorrect.
Antique clocks wall clocks mantle clocks.
Use the adjustment nut.
On clocks with a pendulum move the pendulum disk up to speed up the clock or down to slow it.
Adjusting the pendulum shorter will cause your clock to run faster while lengthening it causes it to run slower or simply put speedup slowdown in the pendulum regulation diagram below look for the rating nut at the base of the pendulum which is what raised or lowers the pendulum disk or bob.
Simply count the chimes at a convenient time say 10 then stop the clock immediately.
Move the hour hand backward and forward between the hour positions until the clock chimes the correct hour then adjust to the correct time.
Turn it to the right to move the disk up and to the left to lower it.
Then in your own time loosen the hands and move them to the 10 o clock position now re tighten them.