188 



REPORT ON 



AFTER BINNACLE COMPASS. 

 Normal Equations. 



Hence 



AI = O.OIO 



-' = 0.0048 



0.664 



_ = O.OOII2 

 X 



-== 0.0084 



^=4-o.oo2 



^ = O.OOO22 



AFTER RITCHIE COMPASS. 

 Equations of Condition. 



Hence 



4,= o.ooo 



4-0.0178 



Normal Equations. 



4789.2 



^=4-0.766 



4- '5-930 

 4- 0.926 

 4- 78.581 



4- 0.231 

 4- 26.514 



A/' 



=.0.00122 



-4* 0.0052 



i.= 0.149 

 AC) = 4- 0.00042 



4- 4789-2 



