Single-point Displacement Meter

Kingmach’s single-point displacement meter focuses on the practical side of deformation monitoring. The system uses a groutable anchor at the measurement depth, a stainless steel rod inside a protective PVC pipe, and a reference plate at the collar. Rods come in lengths up to 100 m, fully joined with couplers, so you can go as deep as your borehole allows. The rod protrudes a few centimeters above the reference plate, and you measure from the plate edge to the rod tip with a digital depth gauge—resolution typically 0.01 mm is achievable, though that depends on the gauge you pair with it. Accuracy is more about repeatability: as long as the rod moves freely and the reference plate stays put, you’ll catch sub-millimeter shifts over time. Installation is boring but crucial: you grout the anchor in place, let it cure, then tighten the rod and set your initial reading. Most sites run these alongside extensometers or inclinometers for a fuller picture, but sometimes one point is all you need. Temperature effects can be a nuisance, so we often recommend recording the rod temperature if you’re chasing very fine numbers. Kingmach can customize rod diameters, anchor types, and plate designs to fit your specific borehole setup or headroom constraints. It’s a low-tech, high-watchfulness instrument—nothing fancy, but it does the job.