Make a Mini Hygrometer
Aus Open Source Ecology (OSE) Germany - Entwicklungsplattform
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Make a Mini Hygrometer Basic Data Category: Hygrometer URL (first publication): https://www.youtube.com/watch?v=B9FPBQzlhbc
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Other
Design files are in original format: No Free redistribution is allowed licence: No
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Description
Small wood hygrometer used to measure the humidity cycles. It has a slot to fit a business card to keep record of the changes.
+ General Reviews 
