Survex 1.1.12
Copyright ¸ 1990-2007 Olly Betts
Survey has no fixed points. Therefore I've fixed mainchamber1.026x at (0,0,0)

Survey contains 43 survey stations, joined by 43 legs.
There is 1 loop.
Total length of survey legs =  246.41m ( 246.31m adjusted)
Total plan length of survey legs =  211.87m
Total vertical length of survey legs =   78.10m
Vertical range = 58.74m (from mainchamber1.026x at 0.00m to mainchamber1.042 at -58.74m)
North-South range = 53.25m (from mainchamber1.011 at 6.72m to mainchamber1.037 at -46.53m)
East-West range = 60.75m (from mainchamber1.026x at 0.00m to mainchamber1.042 at -60.75m)
   7 1-nodes.
  29 2-nodes.
   7 3-nodes.