Hygrometer, demo unit

DT803-1H
Price on request
For a simple and fast explanation of humidity and and pointer deflection in a hygrometer.
The hygrometer is placed in an air-tight, transparent plastic box,
with a small container of hot water.
Once the box is closed the humidity increases,
as is indicated by the pointer deflection.
Hygrometer (0 - 100%) plus large and small plastic boxes

Operating instructions (ENG)

DT803-1H Manual (PDF) (126.58KB)