encoding  utf-8
survey R13

centreline
cs OSGB:ST
date 1974 02 16
#Source WIS survey book 2 pp79/80

data normal from to compass clino tape ignoreall
units tape feet
#calibrate compass +7.50
calibrate compass -0.53
#altered to allow for automatic mag dev correction

553  554  174.00  1.33  20.1
554  555  173.50  -9.33  18.1
555  556  043.00  23.33  11.2  too tight at 10'
556  557  065.00  17.5  25.0  in low bedding plane beyond constriction

endcentreline
endsurvey R13