The Westminster/ Whittington clock means that it has 2 or 3 settings.
2. Westminster Based on the music My redeemer liveth by Handel
Set the clock onto the westminster setting, this is the easiest. At quarter past the hour it should sound 4 notes. The half past should be 8 notes. Quarter to the hour should be 12 notes and the hour should be 16 notes then the striking of the hour. For example on 8 'O clock you should hear 16 notes then the clock should chime 8 times. Sometimes if the hour is out just gently stop the pendulum, check what hour the clock is striking then without taking the hands off move only the hour hand to the hour. Do not do this with the minute hand.
I hope this helps you! If you are not sure please email me [email protected]
I fix these clocks.