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How to Use a Short & Mason Storm Guide

The Storm and Mason Storm Guide, otherwise known as the stormoguide, is an antique barometer that was used around the turn of the 20th century to predict the weather for the immediate future. Fortunately, this barometer works very similarly to the modern day version. That means once you accurately understand what an increase or decrease in pressure means, relative to the situational norms, the weather can be semi accurately predicted.

Instructions

    • 1

      Set the altitude dial for the correct height of the barometer over sea level. This has to be done in order to ensure the barometer is giving correct readings. Before the stormoguide can give a correct reading, it must be calibrated by having the altitude dialed in correctly.

    • 2

      Set the gauge pressure. This allows the user to compare the pressure within the barometer to the atmospheric pressure. This is absolutely necessary in order to find out what the change in pressure is and therefore what the likely weather will be in the near term. The weather service will have a current barometric pressure reading, which will need to be dialed into the barometer. This gives the instrument a starting point and allows the user to be able to see and measure the change in pressure. The measure of change is how the tool predicts the weather.

    • 3

      Watch the dial as it moves. This will show the change in pressure. The Storm and Mason stormoguide features a dial calibrated in inches by 2/100th increments from 26 to 31. Furthermore, it is divided into two scales, the upper one for raising barometric pressure, the lower scale for falling pressure. This is important because the weather prediction is different depending on if the pressure is rising or falling. If the pressure is rising then simply read the prediction for the upper part of the graph. The reverse is true for falling pressure.


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