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Nernst 1937 Portable Dew Point Meter
1937 ndi mita yopepuka, yonyamula
zomwe zimapereka miyeso yakumunda mwachangu
mame ndi chinyezi
miyeso, yokhala ndi ma calibration omangidwa
kupereka kukhazikika kwanthawi yayitali.
Foni
Imelo
