Avongard is a UK company who has been trading since the 1970s.

Avongard was formed in 1976. The joint founder of the company and now the Technical Director is a Chartered Structural and Civil Engineer and Chartered Surveyor. He recognised there was a need for a simple but reliable calibrated gauge for the monitoring of cracks. Prior to that time only crude qualitative methods or high precision high-resolution instruments were available.

The Tell-Tales (generic name for crack gauges) supplied by Avongard Ltd are the original and genuine product.