收藏: Concrete crack width gauge

VTSYIQI Digital Concrete Crack Width Gauge Meter Tester 0 to 8mm for Bridges Tunnels Buildings Metal Surface Crack Width Slit Width Gauge Observation Instrument

VTSYIQI Digital Concrete Crack Width Gauge Meter Tester 0 to 8mm for Bridges Tunnels Buildings Metal Surface Crack Width Slit Width Gauge Observation Instrument