114 HANDBOOK OF MAGNETIC COMPASS 



removed in order to determine the exact coefficients for the ship itself, 

 although Flinders bar data can be obtained from such an analysis with 

 correctors in place, provided the correctors are not changed between 

 observations. The purposes of all the other NBS forms are clearly 

 defined in the above excerpt from NBS Form 1101, and additional 

 information for their use is given on each form. 



