Crack Monitor

A monitor consists of two overlapping acrylic or rigid PVC plates. One plate is marked with a millimeter grid, the other with cross hairs centered over the grid. Once installed, any movement can be easily seen and recorded on the Crack Progress Chart included with each Monitor.

The C-198 Crack Width Gauge is used to measure crack widths up to 7 mm wide on one scale and up to 160 mm on the other scale.