Joint Displacement Gauge

The terms are sometimes used interchangeably, but a joint displacement gauge is typically designed for wider openings or movement across construction joints—like between concrete slabs in a tunnel lining—while a crack meter often targets finer surface cracks. Kingmach’s range covers both, and the team can help match the right model to your expected displacement range.

They work in both scenarios. For existing structures, anchoring points are retrofitted with anchors or expansion bolts. For new builds, they can be embedded or surface-mounted at commissioning. Kingmach provides mounting templates and guidance to align the gauge axis with the expected movement direction.

There is no one-size-fits-all answer, but in places with big daily temperature swings, you often want readings at least every hour during critical periods to separate thermal cycles from actual structural movement. Many users connect the gauge to an automated logger that records readings more frequently during the hottest part of the day, then thins them out at night. Kingmach’s electronic gauges can handle that kind of schedule without manual intervention.

Yes, customization of rod length, range, and even material grade is something Kingmach does regularly. The standard models cover common ranges, but if your joint depth or width is outside typical specs, you can request a custom solution. Lead time adjusts accordingly, so it is best to discuss this early in the project planning phase.

In most cases, periodic checks for corrosion, cable integrity, and calibration drift are enough. Mechanical gauges may need occasional cleaning of the measuring surfaces. Electronic versions benefit from firmware checks if they are connected to a digital system. Kingmach’s technical team can advise on maintenance schedules based on the specific model and environmental exposure.