Thread: Garmin ascent data accuracy
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Old 03-20-24 | 10:33 AM
  #23  
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Originally Posted by PeteHski
the Garmin is measuring altitude indirectly with change in ambient pressure
Originally Posted by Iride01
A change 0.1 Hg or about 3.3 millibars of atmospheric pressure will change the reading on your device by 100 feet from whatever your cyclometer with barometric sensor established as the reference pressure
Is that how all modern cyclometers (e.g., Garmin, Wahoo, etc.) measure elevation, via atmospheric pressure? I always wondered about that...seemed overkill to be pinging the GPS satellite to measure altitude dynamically.
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