InterviewSolution
 Saved Bookmarks
    				| 1. | 
                                    A barometer contains mercury | 
                            
| 
                                   
Answer»  Mercury barometer. In the mercury barometer, atmospheric pressure balances a column of mercury, the height of which can be precisely MEASURED. To INCREASE their accuracy, mercury barometers are often corrected for ambient TEMPERATURE and the LOCAL value of gravity  | 
                            |