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This article in AJ

  1. Vol. 78 No. 1, p. 211-212
    Received: Mar 5, 1985

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Uniform Travel Speed for Manually Propelled Sprayers and Spreaders1

  1. D. D. Wolf and
  2. K. L. Edmisten2



Accurate application of solutions from sprayers and of granules from spinner spreaders requires a known constant speed of travel. Use of a commercially available pocket-size audio metronome is described to aid the operator in maintaining a desired speed. The metronome was powered by a 9-V battery and was carried in a shirt pocket. The tempo of the metronome was adjusted so that the operator traversed a known course length in a specified time period. for example, 24 s to traverse 26.8 m would be equivalent to 4 km h−1. The tempo set by the metronome varied depending on the stride length of the operator. Coefficient of variation with metronome pacing was 1.7% and without the metronome was 3.7%. A method for calibrating walking speeds using a metronome is described.

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