Product Description
The Tell-Tale is a precision gauge, consisting of two plates which overlap for a part of their length.
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.
The Tell-Tale crack monitoring gauge allows monitoring of horizontal movement of +/- 20mm and vertical movement of +/- 10mm.
- Requires screws or epoxy glue for fixing (not included)