Made of something. A scarred cobalt housing, blackened steel slider carriage and swept metal chain teeth.
The moment. Dragging moves the chain with the value. Repeated passes progressively mark the teeth, while the carriage stays under direct pointer control.
Yours to adapt. Copy the component source, styles and materials. Functional text stays live, effects respect reduced motion, and the artwork requires no remote hosting.
Try it
Drag the carriage, or focus it and use the arrow keys.