weather instrument
this is what the meteorologist use to predict weather
the first weather instrument
The first weather instrument
the BAROMETER can tell you when the hit is high or low.
The first instrument
the SLING PSYCHROMETER measures relative.
The first instrument
the WIND VANE can tell tell where the wind blow.
The first instrument
the WEATHER MAPS can tell cold front and warm front.
The first instrument
the WEATHER BALLOON can tell the weather.
The first instrument
this can tell what is going on