Regulate & Adjust Watch Movement & Accuracy

All you ever wanted to know about regulating your watch yourself…and why you wished you hadn’t asked… Regulating a mechanical watch means making it run slightly faster or slower, by making a small change in the effective length of the balance hairspring. The shorter the effective length, the quicker the balance completes its swing and so the watch runs faster. If the effective length is made greater, the opposite occurs. This change is made by moving the regulating lever.