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Concrete Crack Monitors

Monitoring crack widths in concrete buildings, bridges, and roads is easy and reliable with Gilson Concrete Crack Monitors. The overlapping upper plate is transparent and marked with a red crosshair cursor. The white bottom plate measuring grid is marked in millimeters. Opening and closing of the crack is monitored in 1mm increments. Monitors are affixed with user-supplied screws and adhesive.

Model: HM-639
Model: HM-637
Model: HM-634
Model: HM-635
Model: HM-636
Model: HM-638
Model: HM-642