VW type 3D crackmeter SJ-3100, 3110, 3115, 3120

This is a mounting jig that measure displacement as triple
axial by waterproof type displacement meter.
This mounting jig with displacement is installed to measure
movement at the expansion joint and crack in dam or
tunnel or tank.
The design of mounting jig can be changed to meet  
purpose at the site.
The Max. range of displacement meter is 50mm,
100mm and 150mm.