356 



MAGNETIC METHOD 



[Chap. 8 



(declinator), (2) an attachment for the determination of the horizontal 

 intensity by oscillation, (3) two bars for horizontal intensity determination 

 by deflection, and (4) a dip circle for the determination of the inclination. 



American Aakania Corp. 



Fig. 8-35a. Magnetic theodolite with declinator attachment. 



American Askania Corp. 

 Fig. 8-356. Magnetic theodolite with deflector attachment. 



The accurate determination of inclination has long been a problem in 

 regional magnetic surveying, and the dip circle has gradually been replaced 

 by the earth inductor. This instrument offers great possibilities not only 

 for determining the direction of dip, but also for measuring declination 



