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The anemometer is an instrument used to measure the velocity of the wind.

Robinson Cup Anemometer

The anemometer is an instrument used to measure the velocity of the wind.

The psychrometer (showing wet and dry bulb thermometers) is an instrument used for determining the humidity by the temperature of evaporation.

Psychrometer

The psychrometer (showing wet and dry bulb thermometers) is an instrument used for determining the humidity…

"Rain gauges are usually vertically placed sheet-metal hollow cylinders of from 5 to 8 inches in diameter. (The figure) shows a rain gauge with a funnel-shaped mouth, A, and an inside receiver, C, of less diameter than the outer cylinder." -Waldo, 1896

Rain Gauge

"Rain gauges are usually vertically placed sheet-metal hollow cylinders of from 5 to 8 inches in diameter.…

"The horizontal direction of the wind is usually observed by means of an instrument called the arrow wind vane, the head of the arrow pointing in the direction of approach of the wind. The arrow is free to revolve horizontally around a vertical axis placed near the head." -Waldo, 1896

Arrow Wind Vane

"The horizontal direction of the wind is usually observed by means of an instrument called the arrow…