Standard Tell-TaleBack to Avongard Tell-Tales
The Avongard Standard Tell-Tale is a precision gauge that consist 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.
- Fix using Screws and Adhesive (not included but available as accessories).
- Supplied with full instructions and Crack Record Sheet.
Fixing the Tell-Tale
The Tell-Tale is fixed across the crack using screws and plugs and/or adhesive.
Monitoring Crack Movement
The two pegs are removed. As the crack opens, or closes, the cursor moves relative to the calibrated scale. The opening or closing of the crack is then recorded on the crack record sheet supplied.