190 



REPORT ON 



Forward Alidade Compass. 

 Normal Equations. 



Absolute Terms. 



^ 



x 



p 

 x 



X 



/ 



X 



Q 



X 



X 



o = o.ooo 

 o = + 0.255 



= 4- 0.012 

 = 4- 1.089 

 = 4- 0.135 

 = 4- 0.037 

 = 4- 4.686 



4- O.OII 



— 0.135 



— 0.037 



— 4.686 

 4- 0.255 

 4- 0.012 

 + 1.089 



4- 16.294 

 + 0.826 

 4- 70.177 



4- 0.258 

 4- 28.825 



+ 4983-3 



4- 16.294 

 4- 0.826 

 4- 70.177 



4- 0.258 

 4- 28.825 



+ 4983-3 



Hence 



A t = — 0.025 

 — = — 0.0162 



= 4-°- OI 4 



-= — O.OOOIO 



X 

 Q 



= — 0.0012 



AC 



= — 0.00031 



Forward Binnacle Compass. 

 Equations of Condition. 



Absolute Terms. 



A 



c 



p 



b.P 



/ 



Q 



A£ 







X 



X 



X 



X 



X 



X 



= 4- 0.099 



— 0.045 



4- 2.694 



4- 0.212 











= + °-°34 



— 0.004 



+ 1-176 



4- 0. 148 



4- 2.520 









= — 0.008 



— 0.010 



4- 0.077 



+ 0. 161 



+ 9-516 









= — 0.051 



— 0.012 



— 0.603 



4-0.166 



+ 13-933 









= — 0.092 



— 0.038 



— 1.426 



4- 0.164 



4- 16.522 









= — 0.031 



— 0.013 



— 0.710 



4-0.158 



+ 24-375 









= — 0.020 



— 0.037 



— 0.113 



+ 0.143 



+ 25.608 









= 4- 0.018 



— 0.027 



4- 0.623 



+ 0.132 



- 4- 26.316 









= 4- 0.036 



— 0.029 



4-0836 



4- 0.129 



4- 27.440 









= 4- 0.082 



— 0.062 



4- 1. 910 



4-0.177 



+ 41-519 









= 4- 0.045 



4- 0.099 









+ 2-694 



4- 0.212 





= 4- 0.004 



4- 0-034 









+ 1-176 



4- 0.148 



+ 2.520 



= 4- O.OIO . 



■ — 0.008 









+ 0.077 



4- 0.161 



+ 9-5i6 



= 4- 0.012 



— 0.051 









— 0.603 



4- 0.166 



+ '3-933 



= 4- 0.038 



— 0.092 









— 1.426 



+ 0.164 



4- 16.522 



= 4- 0.013 



— ■ 0. 03 1 









— 0.710 



4-0.158 



+ 24-375 



= 4- 0.037 



— 0.020 









— 0.1 13 



+ 0.143 



4- 25.608 



= 4- 0.027 



4- 0.018 









+ 0.623 



+ 0.132 



4- 26.316 



= 4- 0.029 



+ °-°36 









+ 0.836 



4- 0.129 



+ 27.440 



= 4- 0.062 



4- 0.082 









4- 1. 910 



4-0.177 



+ 41-519 



= 0.000 



+ 0.043 







= 4- 0. 690 



— 0.211 



+ 16.294 





= 4- 0.015 



— 0.046 



4- 0.826 



+ 0.258 



= + 1-334 



— 6.283 



+ 70.177 



4- 28.825 



= 4- 0.21 1 



4- 0.690 







= 4- 0.046 



+ 0.015 







= 4- 6.283 



+ 1-334 







Normal Equations. 



+ 4983-3 



-= — 0.0477 



= + o. 140 



&.P 



= — 0.00041 



4- 16.294 

 4- 0.826 

 4- 70.177 



4- 0.258 

 4- 28.825 



i = — O.OO59 



Q 



| = — 0.075 



iii = — 0. 



30074 



+ 49S3-3 



