
I bought this clock to replace a quartz movement that was not working in my sister-in-law's large wall clock. I used original arms that didn't match the shafts. All that was needed was a slight extension with the tip of the knife blade. The shaft was also shorter (no fault of the seller or the product). I just stopped using double sided mounting tape and drowned the lock nut as well. If you cannot accurately measure the watch to be replaced, please note that some modifications may be required. Other than that, this step works great.

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