Rock bolt pull tester set
7200, 7201
Tunnel convergencemonitoring system
ACE-TCS
Rail track monitoringsystem
ACE-RTM
VW convergence meters
1345, 1347
Digital tape extensometer
2350D
VW shotcrete stress cells
1270, 1280
Mechanical extensometers
2390, 2391A, B
VW rod extensometers
1390, 1391
VW rock bolt stressmeters
1350