RST Vibrating Wire Crack Meter
Vibrating Wire Crack Meters are designed to measure movement across surface cracks and joints. They are easily installed by grouting, bolting or bonding the two threaded anchors (with ball joints) or other mounts, on either side of the crack/joint, and then reattaching the anchors to the sensor.
Mechanical Crack Meter
A traditional mechanical crack meter to monitor the crack on the surface of structures. It consists of a graduated scale and a transparent acrylic plate with a hairline cursor mark. When installed across a crack, the graduated scale and cursor move relative to each other depending upon the crack opening or closing.