210 



REPORT ON 



a, =+ 0.924 ± 0.004 



c 

 = -f- 0.0240 



% 

 p 

 = -f. 0.460 



aP 



= — 0.00102 



/ 



0.0016 



_M_ — _). 0.006 



a<2 



— ^ =« — 0.00023 



c = -+- 0.0221 



/>= + 0.425 



A-f = + O.OOO94 

 /=— O.OOI5 



Q = + 0.006 



A(? = — O.O002I 



a = — 0.0605 



b = — 0.0008 



d = — 0.0008 



e = — 0.0917 



g = -f- 0.0407 



^ = + 0.0050 



£ = + 0.1006 

 R = + 0.166 



Ai? = + O.OO069 



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

 compass are 



X' =" X — 0.0605 X — 0.0008 Y-\- 0.0221 Z + 0.425 — 0.00094 t 

 y = Y — 0.0008 X — 0.0917 Y — 0.0015 Z + 0.006 — 0.00021 t 

 Z' ' = Z + 0.0407 X -\- 0.0050 K-f- 0.1006 Z + 0.166 -)- 0.00069 ' 



The following are the final values of the coefficients of the 



After Azimuth Compass. 

 3( = 0.000 



33 = — 0.0026 tan 9 — 0.373 0.00032 — ± 0.004 



1 / 



(5 = + 0.0066 tan e — 0.044 -f — h 0.00039 -— ± 0.004 



JT) = + 0.112 ± 0.003 

 Qj = 0.000 ± 0.003 



Z' , cosf 



— =14 0.1 140 — o. 



Z tan 9 



sin? 



0.0509 — 0.3918 1- 0.00363 ■-— ± 0.010 



= + 0.864 =fc O.OII 

 = — 0.0026 



•' — °-373 



A.P 



= — O.OOO32 



"A ' 



-i— = + 0.0066 



X 



Q 



. == — 0.044 



*Q. 



+ 0.00039 



c = — 0.0022 

 p = — 0.322 



A.P = — O.OOO27 



/= + O.0058 



(2 = —0.038 



AQ = -f 0.00034 

 a = — 0.0396 



£ = 0.0000 



d = 0.0000 



e = — 0.2324 



g= + 0.1140 



h = + 0.0098 



k = — 0.0509 

 .ff = — 0.392 



A^ = + O.OO363 



