React · SwiftUI · agent guides
Drum
A numbered wheel seen through a window: a strip of digits on a cylinder that wraps from 9 into 0, shaded where it turns away. Its value can stand between two digits while it rolls.
Use it for
- A counter you can read at a glance: the counter drum's digits (a streak, a count of things).
- A number that changes by steps and should be seen to change.
Don't use it for
- A number in the interface. Use text in the readout role.
- A measure that isn't a count (a level, a proportion): that's a needle or a fader.