Abstract:

The compass has a lot of merits, for example, light and flexible, the operation to be simple facilely, the observation speed quick and suits in narrow land sector survey and so on. It is themain instrument in the process of surveying the courtyard and underground stope measurement. Because it uses a large number of irons instead of wood in the underground, has the magnetic disturbance, causes the observation condition very inaccessib ility the above request. Using themeasuring error theory, we has carried on the error analysis to the compasswire, proposedm any certainm easures of increasing the compass wire precision, in order to be able to extend service life of the compass in the gold mine.

Key words:  Compass, Traversing, Precision, Magnetic effect