VI. Basic Measurement

    Align the zero graduation on the rim accurately with the starting point on the ground, roll the wheel backward about 20 degrees, and zero the trip distance on the third line of the meter by pushing the body of the meter forward in the bracket for about three seconds. Ride continuously until the desired revolutions are registered on the third line of the meter (ignore the decimal point) or until about one revolution before the desired finish. Stop the bicycle immediately and roll forward slowly until the desired fraction of a revolution is indicated on the wheel rim or until the wheel is aligned with the desired finish line. If there is a need to go backward through the zero point on the rim, note the meter reading at the stop and decrement this by one for every passage through the zero point.  Repeat the whole process for measurements beyond the first finish point.

    Do not roll backward through the rim zero point unintentionally as this can generate one or two spurious revolutions. Avoid stopping the bicycle during measurement, but if this is necessary do so immediately after the meter increments or glance down at the rim reading and stop remote from the zero point. The wheel can then be allowed to rock backward and forward moderately without affecting the revolutions displayed on the meter.