Tunnel surveying and monitoring

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  Pillar head end plates – forced centring
  
• 
  Mobile measuring pillar
  

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  Brackets
  
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  Protection and safety systems
  

• 
  Tunnel lasers
  
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  Fixing accessories, prism for tunnel construction: measuring bolts, adapters, wall bolts
  

• 
  GOECKE Bireflex-targets and monitoring prisms
  
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  Monitoring with magnetic sphere prisms