Deck : General Navigation - 921/2138
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| A mercurial barometer at sea is subject to rapid variations in height ("pumping") due to the pitch and roll of the vessel. To avoid this error, measurements of atmospheric pressure at sea are usually measured with a(n) __________. |
| A) aneroid barometer |
| B) syphon barometer |
| C) fortin barometer |
| D) cistern barometer |
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