At the summit, their aneroid barometer read 13.175 inches, their boiling-point thermometer read 174.9 degrees, their mercurial barometer read 13.617 inches.
2.
Each station was equipped with a " Mercurial Barometer, two Thermometers ( a maximum and a minimum Thermometer ), an Anemometer to measure the velocity of the wind, a Wind Vane and a Rain Gauge ".
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