| − | An instrument used to measure atmospheric pressure.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> | + | An instrument used to measure [[atmospheric pressure]], often used in [[weather]] stations, and also in [[altimeters]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> |