210 



REPORT ON 



x = 4- 0.924 0.004 



Hence, the general equations for the determination of the deviations of this 

 compass are 



X' = X 0.0605 X 0.0008 F+ 0.0221 Z 4- 0.425 0.00094 / 

 y = Y 0.0008 X 0.0917 Y 0.0015 Z 4- 0.006 0.00021 / 

 Z' = Z + 0.0407 X + 0.0050 Y+ o. 1006 Z + o. 166 4- 0.00069 t 



The following are the final values of the coefficients of the 



AFTER AZIMUTH COMPASS. 

 21 = o.ooo 



33 = 0.0026 tan 9 0.373 -L 0.00032 - 0.004 



Ji H 



Q, = + 0.0066 tan 6 0.044 -J. 4- 0.00039 0.004 



H H 



!^=> 4- o. 112 0.003 

 Q = o.ooo 0.003 



cosf 



a I + O.II40 0.0098 ^5-i 0.0509 0.3918 4- 



7 ti A ' * yi j 7 oy ^ T^ 



tan 9 



X -i + 0.864 O.OII 



tan 9 



_ 0.010 



