Product Code: 6.99
Tell-Tales are precision gauges that consist of two plates which overlap for a part of their length.
The basic Tell-Tale crack monitoring gauge that monitors horizontal and vertical movement across a crack on a flat surface to an accuracy of +/- 1.0mm and by interpolation to +/-0.5mm.
The bottom plate is calibrated in millimetres 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
How to Use
The Tell-Tale is fixed across the crack using screws and plugs and/or adhesive
The tape is then cut. As the crack opens, or closes, the cursor moves relative to the calibration scale. The opening or closing of the crack is then recorded on the crack record sheet supplied.
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Profile Boards: 73mm x 13mm x 900mm (16 No)
Pegs: 40mm x 40mm x 1500m (16 No)
Free Nails for attachi...
The Tell-Tale is hinged enabling it to be used in internal corners of angles between 70 and 180 d...