How to Make a Hygrometer: 15 Steps (with Pictures) - wikiHow
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The principles of hygiene; a practical manual for students, physicians, and health-officers . FlG. 3.—Psychrometer : a, dry- FlG. 4.—The hair hygrometer : a, bulb thermometer; /;, wet-bulb ther- b, point
Hygrometer - Wikipedia
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Hair hygrometer, principle operation and application | Instrumentation and Control Engineering
a De Saussure hair hygrometer (Ganot 1860). b Chiminello goose quill... | Download Scientific Diagram
Hygrometer Overview & Uses | What is a Hygrometer? - Video & Lesson Transcript | Study.com
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3 Different Types of Hygrometers and Their Applications | Linquip