encoding  utf-8
survey G1

centreline
cs OSGB:ST
date 1981 10 07

data normal from to compass clino tape ignoreall
declination 0 degree
#added to override automatic date correction.
calibrate compass +6.66
station 169 "" entrance
fix 169  50453 55510 230
#169 is south corner of hole in lid of entrance shaft

169  170  - down  2.26
170  171  161.00  -30.00  3.84
171  172  152.00  -14.50  1.83
172  173  -  up  0.82
173  174  -  down  4.24
174  175  195.00  50.00  0.60
175  176  155.00  8.33  4.34

endcentreline
endsurvey G1