Timeline ruler
Top time ruler — tick marks for seconds + minutes + frames, label every 10s, with a zoom-level chip showing the current scale.
Production answer
Timeline ruler is a reusable Oak Flats Muffler Men UI primitive with documented states, accessibility expectations, theme behavior, and implementation evidence.
Primary CTAReview Timeline ruler states
Generative search brief
Timeline ruler: Top time ruler — tick marks for seconds + minutes + frames, label every 10s, with a zoom-level chip showing the current scale.