My wall clock runs about 10 min utes fast per 24
You have to lengthen pendulum as this will make watch tick slower. Can not say for how much as for every particular clock there are different adjustments.
Do it bit-by-bit unscrewing the screw thus lowering the bob. Observe time keeping day-by-day and eventually you will reach the right length of the pendulum for precise timekeeping.
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on Mar 23, 2017