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Hair hygrometer white dial with nickle plated and black finished brass case, suitable for in screens or general domestic use where humidity is important (instruments, antiques etc)
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Hair hygrometer, silver effect dial with nickle plated bezel and black finished brass case, suitable for in screens or general domestic use where humidity is important (instruments, antiques etc)
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Large Chrome Precision Hair Hygrometer with thermometer in Centigrade and Fahrenheit mounted in Chrome plated case.
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A traditional type of Mason's Hygrometer in plastic frame. (the copper ones go green anyway!) Mounted with two spirit thermometers and completer with Moisture chart. The mositure level is found by comparing a dry bulb thermometer with another that has water evaporating off of it by means of a wick immersed in water (the little bottle) Used by gardeners as a frost prediction we believe. Exceptional good price.
Hang in shaded open position.
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The most accurate method to measure moisture is still by using this old fashioned instrument. Also called a Whirling Hygrometer (not to be confussed with the whirling Durbishers of Clive Dunn ilk!) Although plastic cased these are not cheap due to the more accurate mercury thermometers. The wet bulb has a wick which must be soak with water before and during use. Mositure chart included. Primarily used for industrial purposes.
NOT SENT OVERSEAS
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Combined Centigrade Thermometer and Hygrometer showing 'comfort zone' a simple instrument with silver effect dial and chrome bezel on black housing.
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