The standard crack width gauge for walls, monitors horizontal & vertical movements across cracks. Being robust it can be used on internal and external applications. It monitors the opening or closing of a crack to an accuracy of 1.00mm and comes complete with crack recording cards.
- Consist of two plates which overlap for a part of their length. The bottom plate is calibrated in milli-meter and the top plate is transparent and marked with a hairline cursor in the form of a cross.
- Fix using Screws and Adhesive (not included but available as accessories).
- Supplied with full instructions and Crack Record Sheet.