SUMMARY 



Jreater flexibility, economy of 



:ffort, and reliability using 



components . 



Accuracy and reliability under 

 severe environmental conditions 

 Accuracy and ease of operation 



Rigidity, shock mounting and 

 precise establishment of 

 "lubber line" 



SACLAY {Overhauser Effect) 

 Magnetometer (Total field) 

 ALKALI VAPOR MAGNETOMETER em- 

 ploying low frequency sweep (non- 

 resonant)(Total Field). 

 METASTABLE HELIUM MAGNETOMETER 

 (Total Field) 



PORTABLE ELECTRICAL MAGNETOMETER; 

 Single component fluxgate 

 (Dominion Observatory of Canada) 

 RECORDING FLUXGATE MAGNETOMETER; 

 3- component. (Canadian Applied 

 Laboratory) 



E-9 



