Araña (1) - Hierro (forjado)
N.º 39627977
LUFFT + THIES Polímetro en vitrina - Polímetro - Higrómetro - Termómetro
N.º 39627977
LUFFT + THIES Polímetro en vitrina - Polímetro - Higrómetro - Termómetro
A special eye-catcher, 2 Polymeters in display cabinet behind glass
A Polymeter consisting of a hair hygrometer and a thermometer
The measuring element of the hygrometer is human hair that reacts directly to changes in humidity through special treatment.
The readings can be used to determine:
• Relative humidity
• Temperature
• Saturation vapour pressure
• Dew point temperature
• Vapour pressure
• Saturation deficit
• Frost expectation
Both Polymeters are in perfect and good working condition.
LUFFT with alcohol thermometer, THIES with mercury thermometer
Facet cut glass on both polymeters
The hair strands are completely intact
The showcase cabinet can be either placed upright or hung.
Made in Germany, circa 1970
Measuring range: see photos
Dimensions:
Polymeters: 240 x 80 x 25 mm
Display case: 310 x 205 x 80 mm
Weight:
LUFFT 135 grams
THIES 235 grams
With instructions for use in German, English and French
Will be sent carefully packed.
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