188 



REPORT ON 



After Binnacle Compass. 

 Normal Equations. 



Absolute Terms. 



*x 



c 

 X 



p 



X 



/ 



X 



Q 



X 



X 



o = o.ooo 

 o = — 0.288 

 = — O.I22 



= — 13-033 

 = 4- 0.136 



= 4- O.OIO 



= 4- 1-478 



4- 0.068 

 — 0.136 



O.OIO 



— 1.478 



— 0.288 



— 0.122 



— 13-033 



4- 14-910 

 4- 0.652 

 4- 67.212 



4- 0.236 

 + 28-451 



4- 4977.0 



4- 14910 

 4- 0.652 

 4- 67.212 



4- 0.236 

 4- 28.451 



+ 4977-o 



A,= — 0.010 



= 4-0.664 



— = — O.O084 



= O.OOII2 



Q 



— =4-0.002 





6.Q 



— — = — 0.00022 



After Ritchie Compass. 

 Equations of Condition. 



Absolute Terms. 





A \ 





c 



p 



ap 





J 





Q 



AQ 











X 



X 



X 





X 





X 



X 



= — 0. 200 





0.030 



+ 



2.694 



4- 0.212 















= — 0.148 



+ 



0.012 



+ 



1. 176 



4- 0.148 



4- 2.520 













O = O.I2I 



— 



0.017 



+ 



0.077 



4- 0.161 



+ 9-Si6 













O == O.071 



— 



0.060 





1.426 



+ 0. 1 64 



4- 16.522 













O = O.067 



+ 



0.004 



— 



0.710 



4- 0.158 



+ 24-375 













O = O. I02 



+ 



0.004 



— 



o-i 13 



+ 0.143 



4- 25.608 













O = O.07I 



— 



0.003 



+ 



0.623 



4- 0.132 



-j- 26.316 













O = O.078 



+ 



0.021 



+ 



0.836 



4- 0.129 



4- 27-440 













O = O. Il8 



— 



0.027 



+ 



1. 910 



4- 0.177 



+ 41-519 













= 4- O.O3O 





0.200 











+ 



2.694 



+ 



0.212 





O = O.OI2 



— 



0.148 











+ 



1. 176 



+ 



0.148 



4- 2.520 



= 4- 0.017 



— 



0.121 











+ 



0.077 



+ 



0. 161 



+ 9-516 



= -j- 0.060 



— 



0.071 











— 



1.426 



+ 



0.164 



4- 16.522 



= — 0.004 



— 



0.067 











— 



0.710 



+ 



0.158 



+ 24-375 



= — 0.004 



— 



0.102 











— 



0.1 13 



+ 



0.143 



+ 25.608 



= 4- 0.003 



— 



0.071 











+ 



0.623 



+ 



0.132 



4- 26.316 



= — 0.021 



— 



0.078 











+ 



0.836 



+ 



0.129 



4- 27.440 



= 4- 0.027 



— 



0.1 18 











+ 



1. 910 



+ 



0.177 



+ 4i-5 I 9 



Normal Equations. 



o = 0.000 



o = — 0.896 



o = — 0.161 



o = — 15.837 



o = 4- 0.022 



o = 4- 0.018 



= 4- 1.525 



Hence 



4- 0.127 



— 0.022 



— 0.018 



— 1-525 



— 0.896 



— o. 161 



— I5-837 



4- 15-930 

 4- 0.926 

 + 78.581 



4- °- 2 3i 



4- 26.514 



4- 4789-2 



+ 15-930 

 4- 0.926 

 4- 78.581 



4- 0.231 

 4- 26.514 



A, = 0.000 

 — = 4- 0.0178 



^=4-0.766 



== — 0.00122 



i-=4" O.OO52 



Q 



i=— 0.149 

 ^- = 4- 0.00042 



+ 4789-2 



