Crack monitor (Tell Tale)

This precision crack monitor provides an accurate, simple method for tracking structural movement in buildings. The two-piece “tell-tale” design identifies horizontal and vertical displacement to within 1mm, offering essential data for structural surveys, insurance claims, and long-term property maintenance.

Precision Orthogonal Grid Matrix – Features an overlaid red hairline crosshair on a clear millimetric grid to register vertical and horizontal structural movement down to 0.5mm.
Weatherproof Polycarbonate Structural Plates – Manufactured from high-durability plastic that resists UV degradation and brittle fractures when exposed to harsh outdoor site conditions.
Integrated Spigot Fixing Apertures – Outfitted with pre-drilled corner anchoring guide holes to enable secure, permanent mechanical mounting across masonry fractures using screws or structural adhesive.
Longitudinal Displacement Trend Tracking – Provides continuous, physical recording capability to monitor structural shifting, building settlement, and foundation cracks safely over extended intervals.

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FAQs

What is a crack monitor tell tale used for on site?

A crack monitor tell tale is a precision gauge used to track structural movement, displacement, and crack progression in concrete, brickwork, or masonry over time.

How does a tell tale crack monitor measure structural movement?

The monitor consists of two overlapping acrylic plates. One plate features a millimetre grid and the other a crosshair, allowing surveyors to record horizontal and vertical movement precisely.

How are crack monitor tell tales fixed to masonry surfaces?

They can be securely attached across a crack using structural epoxy adhesive, heavy-duty tape, or screws depending on the surface texture and monitoring duration.

Are crack monitor tell tales suitable for long-term outdoor monitoring?

Yes, manufactured from durable, weather-resistant plastic, tell tales withstand rain, UV exposure, and temperature changes without degrading or losing grid readability.

How frequently should readings be recorded on a tell tale gauge?

Inspection intervals depend on the structure, but readings are typically logged weekly or monthly by checking the crosshair position on the grid to detect movement trends early.

Can we hire crack monitor tell tales along with our structural surveying kit?

While tell tales are usually permanent fixings available for purchase, we can supply them alongside our complete structural monitoring and survey hire fleet for your project needs.