See how amplitude typically changes dial up, dial down and in vertical positions — and what healthier movements usually look like.
| Position | Common healthy tendency |
|---|---|
| Dial up / dial down | Higher amplitude (horizontal) |
| Vertical positions | Lower amplitude than horizontal |
| Position spread | Some drop is normal; very large gaps deserve attention |
In vertical positions, the balance staff pivots and lubrication conditions change the effective friction. That usually reduces amplitude compared with dial-up or dial-down.
What is a good amplitude dial up? Many healthy fully-wound movements show relatively high horizontal amplitude, often discussed in the rough 250–310° educational band depending on calibre and conditions.
Why is vertical amplitude lower? Extra friction effects in vertical positions commonly reduce amplitude versus horizontal positions.
How much position drop is normal? Some drop is expected. Extremely large spreads or very low values across the board can indicate service needs.
Should I judge amplitude when fully wound? Yes. Low state-of-wind can reduce amplitude and confuse diagnosis.