- 1). Note the reading on the totalizer gauge when you first install it in one location at one height. Also note the date. You don't want to confuse mileage readings between locations. Even if you're just moving the totalizer from one place to another on your own property, you'll want to keep the readings distinct.
- 2). Let the gauge run in that one position for at least a month, preferably for a couple seasons. If you have to test multiple locations, then multiple totalizers may be preferable to moving one totalizer around. Otherwise, you may feel rushed to shorten the reading period, leading to inaccurate readings.
- 3). Record the final gauge reading and date. Count up the number of days between the two dates you recorded. Take the difference between the two gauge readings. This latter number is your "wind run," which is defined as the distance or length of flow of the wind past a point during a given period of time.
- 4). Divide the difference in gauge readings by the number of days that have passed, and then by 24 hours. Since the gauges tend to read in miles, the result will be the average miles per hour over the course of the recording period.
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