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Standard Tell Tale Crack Monitor

This is a basic Tell-Tale crack monitoring gauge that monitors both horizontal and vertical movement across a crack on a flat service to an accuracy of +/- 1.0mm and by interpolation to +/-0.5mm. They are precision gauges that consist of two plates which overlap for a part of their length. The bottom plate is calibrated in milli-metres and the top plate is transparent and marked with a hairline cursor in the form of a cross.

Each Tell-Tale is supplied with a record marking sheet allowing easy comparisons to be made.

They can also be fixed with Araldite.