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  • Polar HRM altimeter?
  • donsimon
    Free Member

    So how does the Polar altimeter work then?
    Did a route last week with 1.500m climbing and the same route today and it had shrunk to only 1.375m of climbing!!!

    peteimpreza
    Full Member

    I think you can calibrate the altimeter in two ways. This may explain the two readings.

    njee20
    Free Member

    Barometric pressure, stay in the place for an hour and it can change by a couple of hundred feet!

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