Timegrapher
A timegrapher is an instrument that can tell you how accurate your watch is by checking its beat rate, amplitude, and beat error. A timegrapher is a device that tells you more than just the accuracy of a watch. Through the built-in microphone, it picks up the ticks and tocks of the watch and calculates indicators of the general health of the movement. So a functional timegrapher gives you many useful pieces of information that you can use to determine the condition of the movement. Parameters - Below are important points to understand before using timegrapher. Beats per Hour (BPH) or Vibrations per Hour (VPH) The top-line statistic when describing a mechanical watch movement is the bph/vph. In other words, the number of times the balance wheel will swing half a rotation over the course of sixty minutes. Watches with a high bph, like the Zenith El Premiero at 36,000 bph, tend to be more accurate, with a smoother movement of the second hand, but potentially require more service du...
