Observed arrival · 2026-10-24
Watch Timegrapher
A browser-based tester that estimates a mechanical watch’s rate and beat error from its ticking, using a phone or laptop microphone.
- For
- Mechanical watch owners and watchmakers
- Worth noticing
- Its documented pipeline uses high-pass filtering, envelope smoothing, and adaptive peak detection; the page says several milliseconds of beat error can indicate a need for watchmaker adjustment.
Field notes
The page asks users to select a beat rate (18,000–36,000 bph) and a test position, then capture 15 seconds of microphone audio. Its documented signal chain filters low-frequency noise, smooths a rectified waveform, and uses adaptive peak detection before calculating rate and beat error. It cautions that short or noisy captures reduce stability and distinguishes microphone-based readings from professional amplitude measurement. A $8.99 upgrade is offered for keeping position-labeled readings together and exporting CSV.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue