1.
Project Location of Monitor Taking Readings: Slide the ruler into the slot in the top plate until it fits into the raised panel on the bottom plate. Displacement Monitoring: Where the red scal on the ruler projects from the top plate take a reading and mark the results below. Horizontal Monitoring: Where the red line at the center of the ruler coincides with the black scale on the top plate, take a reading off the black scale and mark the results below.
Displacement Crack Monitors measure displacement (out of plane) and horizontal movement across a crack. The Displacement Crack Monitor consists of three components: a graduated ruler, a top plate (calibrated) and a bottom plate (not calibrated). It is only the top and bottom plate that are fixed across a crack. The ruler is not left on the gauge, but is only used when taking readings. Fixing Instructions 1.
