P401.012 REGNAULT’S HYGROMETER SIMPLE
Description
For determining the dew point comprising a glass tube 150x25mm with polished silver thimble closed bottom of the tube and the upper end by a rubber bung. The bung has 2 glass air tubes with right angle bends. One tube ending just below the bung, the other reaching nearly to the bottom of the thimble and a hole for thermometer which reads 10 to 50c x 5c.
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