Isochronal, or Isochronous, is a term used to describe a watch or clock that is able to keep time accurately and consistently without the need for manual adjustment. By using an internal oscillator, the watch or clock is able to maintain a regular and steady frequency, allowing it to keep accurate time. Isochronal watches and clocks are often used in timing events and measuring intervals, as they are able to keep accurate time without the need for manual adjustment.
