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Concentrate a ray of sunlight light on it and see the prism split the light into component colours of the spectrum
Each sender also displays temp and humidity for its station
now in a wind
monitoring up to 80m from console via sender
mounted on a sturdy base
Max/Min Spirit Thermometer Color:Green Concentrate a ray of sunlightThis classic spirit thermometer is suitable for either indoor or outdoor locations, has max min and reset functions, and comes in cream or green plastic casing. Particularly useful for monitoring overnight lows or daytime highs. Made in germany by TFA. This version operates inversely you read the LOWESTpoint of the spirit for current temperature and lowest point of the contrast liquid for recent max min (see photo). Easy reset just push the middle
