Barometer. A barometer is a device used to measure atmospheric pressure and its trend. The gold needle is positioned manually. The black needle moves of its own accord, and its position relative to the fixed gold needle indicates whether the atmospheric pressure has increased or decreased. This instrument is reading a low pressure. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Molloy, Cordelia |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |