IMPA 370266 – HAIR HYGROMETER (POLYMETER), WITH MERCURY THERMOMETER – This instrument, known as a polymeter, measures temperature, humidity, vapour tension and dew point. A mercury filled glass thermometer is attached. The humidity element is a bundle of human hair. The dial which indicates selective humidity is 80 mm . Temperature range -20 to 50 C in 1 div. and Humidity scale 0 to 100 % 0.18 kgs in weight. 263 mm in length.
Hãy là người đầu tiên nhận xét “370266 – HAIR HYGROMETER (POLYMETER), WITH MERCURY THERMOMETER”
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